55
Number 55 (fifty-five) is an odd two-digits composite number and natural number following 54 and preceding 56.
| Nominal | 55 |
| Cardinal | fifty-five |
| Ordinal | 55th |
| Number of digits | 2 |
| Sum of digits | 10 |
| Product of digits | 25 |
| Number parity | Odd |
Calculation was done in 0.0000381470 seconds
| Prime factorization | 5 x 11 |
| Prime factors | 5, 11 |
| Number of distinct prime factors ω(n) | 2 |
| Total number of prime factors Ω(n) | 2 |
| Sum of prime factors | 16 |
| Product of prime factors | 55 |
Calculation was done in 0.0000100136 seconds
| List of proper divisors | 1, 5, 11 |
| List of all dividers | 1, 5, 11, 55 |
| Number of divisors d(n) | 4 |
| Sum of all divisors σ(n) | 72 |
| Aliquot sum | 17 |
| 55 is a deficient number , since it is larger than the sum of its proper divisors (17). Its deficiency is 38. |
Calculation was done in 0.0000300407 seconds
| Is 55 a prime number? | No |
| Is 55 a semiprime number? | Yes |
| Is 55 a Chen prime number? | No |
| Is 55 a Mersenne prime number? | No |
Calculation was done in 0.0000209808 seconds
| Is 55 a Catalan number? | No |
| Is 55 a Fibonacci number? | Yes |
| Is 55 a Idoneal number? | No |
Calculation was done in 0.0000071526 seconds
| 55 is not a Happy number |
| 55 is not a Humble number |
| 55 is not a Münchhausen number |
| 55 is not a Perfect number |
| 55 is not a Perfect square |
| 55 is a Palindrome |
Calculation was done in 0.0080249310 seconds
| Base | System | Value |
|---|
| 2 | Binary | 1101112 |
| 3 | Ternary | 20013 |
| 4 | Quaternary | 3134 |
| 5 | Quinary | 2105 |
| 6 | Senary | 1316 |
| 7 | Septenary | 1067 |
| 8 | Octal | 678 |
| 9 | Nonary | 619 |
| 10 | Decimal | 55 |
| 12 | Duodecimal | 4712 |
| 16 | Hexadecimal | 3716 |
| 20 | Vigesimal | 2f20 |
| 36 | Base36 | 1j36 |
| 60 | Sexagesimal | t60 |
Calculation was done in 0.0000190735 seconds
| Square of 55 (n2) | 3025 |
| Cube of 55 (n3) | 166375 |
| Square root of 55 | 7.4161984870957 |
| Natural Logarithm (ln) of 55 | 4.0073331852325 |
| Decimal Logarithm (log) of 55 | 1.7403626894942 |
Calculation was done in 0.0000061989 seconds
| Sine of 55 | -0.99975517335862 |
| Cosecant of 55 | -1.0002448865961 |
| Cosine of 55 | 0.022126756261956 |
| Secant of 55 | 45.194152643123 |
| Tangent of 55 | -45.183087910521 |
| Cotangent of 55 | -0.02213217480798 |
Calculation was done in 0.0000119209 seconds
Is 55 an Odd Number?
Yes, the number 55 is an odd number.
Total number of all odd numbers from 1 to 55 is
28Sum of all the odd numbers from 1 to 55 are
784The sum of all odd numbers is a perfect square: 784 = 28
An odd number is any integer (a whole number) that cannot be divided by 2 evenly. Odd numbers are the opposite of even numbers.Previous odd number is
53
Calculation was done in 0.0000059605 seconds
| The spelling of 55 in words is "fifty-five", meaning that: |
| 55 is an aban number (a number without the letter a) |
| 55 is not an eban number (as it contains the letter e) |
| 55 is not an iban number (as it contains the letter i) |
| 55 is an oban number (a number without the letter o) |
| 55 is not a tban number (as it contains the letter t) |
| 55 is an uban number (a number without the letter u) |
Calculation was done in 0.0000030994 seconds
| Bengali numerals | ৫৫ |
| Eastern Arabic numerals | ٥٥ |
| Hieroglyphs numeralsused in Ancient Egypt | 𓎊𓏾 |
| Khmer numerals | ៥៥ |
| Japanese numerals | 五十五 |
| Roman numerals | LV |
| Thai numerals | ๕๕ |
Calculation was done in 0.0000760555 seconds
| Arabic | خمسة و خمسون |
| Croatian | pedeset i pet |
| Czech | padesát pět |
| Danish | fem og halvtreds |
| Dutch | vijfenvijftig |
| Estonian | blaatɔ̃ vɔ atɔ̃ |
| Faroese | fimmtifimm |
| Filipino | limáng pû’t limá |
| Finnish | viisikymmentäviisi |
| French | cinquante-cinq |
| Greek | πενήντα πέντε |
| German | fünfundfünfzig |
| Hebrew | חמישים וחמש |
| Hindi | पचपन |
| Hungarian | ötvenöt |
| Icelandic | fimmtíu og fimm |
| Indonesian | lima puluh lima |
| Italian | cinquantacinque |
| Japanese | 五十五 |
| Korean | 오십오 |
| Latvian | piecdesmit pieci |
| Lithuanian | penkiasdešimt penki |
| Norwegian | femtifem |
| Persian | پنجاه و پنج |
| Polish | pięćdziesiąt pięć |
| Portuguese | cinquenta e cinco |
| Romanian | cincizeci şi cinci |
| Russian | пятьдесят пять |
| Serbian | педесет и пет |
| Slovak | päťdesiatpäť |
| Slovene | petdeset pet |
| Spanish | cincuenta y cinco |
| Swahili | hamsini na tano |
| Swedish | femtiofem |
| Thai | ห้าสิบห้า |
| Turkish | elli beş |
| Ukrainian | пʼятдесят пʼять |
| Vietnamese | năm mươi lăm |
Calculation was done in 0.0179150105 seconds
| Number 55 reversed | 55 |
| ASCII Code | 55 | 7 |
| Unicode Character | U+0037 | 7 |
| Unix Timestamp | Thu, 01 Jan 1970 00:00:55 +0000 |
Calculation was done in 0.0000348091 seconds
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