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21081

Number 21081 is an odd five-digits composite number and natural number following 21080 and preceding 21082.

Properties of the number 21081

Nominal21081
Cardinaltwenty-one thousand eighty-one
Cardinal
twenty-one thousand eighty-one
Ordinal21,081st
Number of digits5
Sum of digits12
Product of digits0
Number parityOdd
Calculation was done in 0.0000369549 seconds

Prime Factorization of 21081

Prime factorization3 x 7027
Prime factors3, 7027
Number of distinct prime factors ω(n)2
Total number of prime factors Ω(n)2
Sum of prime factors7030
Product of prime factors21081
Calculation was done in 0.0000798702 seconds

Divisors of 21081

List of proper divisors 1, 3, 7027
List of all dividers1, 3, 7027, 21081
Number of divisors d(n)4
Sum of all divisors σ(n)28112
Aliquot sum 7031
21081 is a deficient number , since it is larger than the sum of its proper divisors (7031). Its deficiency is 14050.
Calculation was done in 0.0000200272 seconds

Prime numbers

Is 21081 a prime number?No
Is 21081 a semiprime number?Yes
Is 21081 a Chen prime number?No
Is 21081 a Mersenne prime number?No
Calculation was done in 0.0265741348 seconds

Sequences

Is 21081 a Catalan number?No
Is 21081 a Fibonacci number?No
Is 21081 a Idoneal number?No
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Number theory

Number theory is a branch of pure mathematics devoted primarily to the study of the integers and integer-valued functions.
21081 is a Happy number
21081 is not a Humble number
21081 is not a Münchhausen number
21081 is not a Perfect number
21081 is not a Perfect square
21081 is not a Palindrome
Calculation was done in 0.0029919147 seconds

Numeric Bases of 21081

In mathematics, a base or radix of a numeral system is the number of unique digits, including zero, used to represent numbers in that system.
BaseSystemValue
2Binary1010010010110012
3Ternary10012202103
4Quaternary110211214
5Quinary11333115
6Senary2413336
7Septenary1153147
8Octal511318
9Nonary318239
10Decimal21081
12Duodecimal1024912
16Hexadecimal525916
20Vigesimal2ce120
36Base36g9l36
60Sexagesimal5pL60
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Mathematical operations

Mathematical operations are actions that are performed on numbers or mathematical expressions to find a numerical result.
Square of 21081 (n2)444408561
Cube of 21081 (n3)9368576874441
Square root of 21081145.19297503667
Natural Logarithm (ln) of 210819.9561274398603
Decimal Logarithm (log) of 210814.3238912082569
Calculation was done in 0.0000040531 seconds

Trigonometry

Trigonometry is the study of the relationship between the angles and sides of a triangle.
Sine of 210810.79152138339493
Cosecant of 210811.2633897466053
Cosine of 210810.61114147267926
Secant of 210811.6362823416581
Tangent of 210811.2951524626939
Cotangent of 210810.77210987030824
Calculation was done in 0.0000109673 seconds

Number parity

Parity is the property of an integer of whether it is even or odd.

Is 21081 an Even Number?

No

Is 21081 an Odd Number?

Yes, the number 21081 is an odd number.
Total number of all odd numbers from 1 to 21081 is 10541
Sum of all the odd numbers from 1 to 21081 are 111112681
The sum of all odd numbers is a perfect square: 111112681 = 10541
An odd number is any integer (a whole number) that cannot be divided by 2 evenly. Odd numbers are the opposite of even numbers.
Calculation was done in 0.0000050068 seconds

Ban number

In recreational mathematics, a ban number is a number that does not contain a particular letter when spelled out in English; in other words, the letter is "banned".
The spelling of 21081 in words is "twenty-one thousand eighty-one", meaning that:
21081 is not an aban number (as it contains the letter a)
21081 is not an eban number (as it contains the letter e)
21081 is not an iban number (as it contains the letter i)
21081 is not an oban number (as it contains the letter o)
21081 is not a tban number (as it contains the letter t)
21081 is not an uban number (as it contains the letter u)
Calculation was done in 0.0000021458 seconds

Numeral systems

How to write 21081 in other number systems?
Bengali numerals২১০৮১
Eastern Arabic numerals٢١٬٠٨١
Hieroglyphs numeralsused in Ancient Egypt𓂭𓂭𓆼𓎍𓏺
Khmer numerals២១០៨១
Japanese numerals二万千八十一
Roman numeralsn/a
Thai numerals๒๑๐๘๑
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Translation

How do you say 21081 in 38 different languages?
Arabicواحد و عشرون ألف و واحد و ثمانون
Croatiandvadeset i jedna tisuća osamdeset i jedan
Czechdvacet jedna tisíc osmdesát jeden
Danish en og tyve tusinde og en og firs
Dutchéénentwintigduizend éénentachtig
Estonianakpe blaeve vɔ ɖekɛ kple blaenyi vɔ ɖekɛ
Faroesetjúgo­eitt tusin og áttati­ein
Filipinodalawáng pû’t isáng libó’t walóng pû’t isá
Finnishkaksi­kymmentä­yksi­tuhatta­kahdeksan­kymmentä­yksi
Frenchvingt et un mille quatre-vingt-un
Greekείκοσι μία χίλιάδες ογδόντα ένα
Germanein­und­zwanzig­tausend­ein­und­achtzig
Hebrewעשרים ואחד אלף שמונים ואחת
Hindiइक्कीस हज़ार इक्यासी
Hungarianhuszon­egy­ezer­nyolcvan­egy
Icelandictuttugu og eitt þúsund og áttatíu og einn
Indonesiandua puluh satu ribu delapan puluh satu
Italianventunomilaottantuno
Japanese二万千八十一
Korean이만 천팔십일
Latviandivdesmit viens tūkstoši astoņdesmit viens
Lithuaniandvidešimt vienas tūkstantis aštuoniasdešimt vienas
Norwegiantjue­ett tusen og åtti­én
Persianبیست و یک هزار و هشتاد و یک
Polishdwadzieścia jeden tysięcy osiemdziesiąt jeden
Portuguesevinte e um mil e oitenta e um
Romaniandouăzeci şi una mii optzeci şi unu
Russianдвадцать одна тысяча восемьдесят один
Serbianдвадесет и једна хиљада осамдесет и један
Slovakdvadsať­jedna tisíc osemdesiat­jeden
Slovenedvaset ena tisuću osemdeset ena
Spanish veintiún mil ochenta y uno
Swahilielfu ishirini na moja, themanini na moja
Swedishtjugoentusenåttioen
Thaiสอง​หมื่น​หนึ่ง​พัน​แปด​สิบ​เอ็ด
Turkishyirmi bir bin seksen bir
Ukrainianдвадцять одна тисяча вісімдесят один
Vietnamesehai mươi mốt nghìn không trăm tám mươi mốt
Calculation was done in 0.0137169361 seconds

Miscellaneous

Number 21081 reversed18012
Unicode CharacterU+5259
Unix TimestampThu, 01 Jan 1970 05:51:21 +0000
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