| Nominal | 51640 |
| Cardinal | fifty-one thousand six hundred forty |
Cardinal fifty-one thousand six hundred forty | |
| Ordinal | 51,640th |
| Number of digits | 5 |
| Sum of digits | 16 |
| Product of digits | 0 |
| Number parity | Even |
| Prime factorization | 2 x 2 x 2 x 5 x 1291 |
| Prime factorization in exponent form | 23 x 5 x 1291 |
| Prime factors | 2, 5, 1291 |
| Number of distinct prime factors ω(n) | 3 |
| Total number of prime factors Ω(n) | 5 |
| Sum of prime factors | 1298 |
| Product of prime factors | 12910 |
| Is 51640 a prime number? | No |
| Is 51640 a semiprime number? | No |
| Is 51640 a Chen prime number? | No |
| Is 51640 a Mersenne prime number? | No |
| Is 51640 a Catalan number? | No |
| Is 51640 a Fibonacci number? | No |
| Is 51640 a Idoneal number? | No |
| Square of 51640 (n2) | 2666689600 |
| Cube of 51640 (n3) | 137707850944000 |
| Square root of 51640 | 227.24436186625 |
| Natural Logarithm (ln) of 51640 | 10.852051844961 |
| Decimal Logarithm (log) of 51640 | 4.7129862335944 |
| Sine of 51640 | -0.99749779472267 |
| Cosecant of 51640 | -1.0025084820143 |
| Cosine of 51640 | 0.07069759206232 |
| Secant of 51640 | 14.144753319441 |
| Tangent of 51640 | -14.109360243039 |
| Cotangent of 51640 | -0.07087493570046 |
| The spelling of 51640 in words is "fifty-one thousand six hundred forty", meaning that: |
| 51640 is not an aban number (as it contains the letter a) |
| 51640 is not an eban number (as it contains the letter e) |
| 51640 is not an iban number (as it contains the letter i) |
| 51640 is not an oban number (as it contains the letter o) |
| 51640 is not a tban number (as it contains the letter t) |
| 51640 is not an uban number (as it contains the letter u) |
| Bengali numerals | ৫১৬৪০ |
| Eastern Arabic numerals | ٥١٬٦٤٠ |
| Hieroglyphs numeralsused in Ancient Egypt | 𓂭𓂭𓂭𓂭𓂭𓆼𓍧𓎉 |
| Khmer numerals | ៥១៦៤០ |
| Japanese numerals | 五万千六百四十 |
| Roman numerals | n/a |
| Thai numerals | ๕๑๖๔๐ |
| Arabic | واحد و خمسون ألف و ستة مائة و أربعون |
| Croatian | pedeset i jedna tisuća šeststo četrdeset |
| Czech | padesát jedna tisíc šest set čtyřicet |
| Danish | en og halvtreds tusinde seks hundrede fyrre |
| Dutch | éénenvijftigduizend zeshonderdveertig |
| Estonian | akpe blaatɔ̃ vɔ ɖekɛ alafa ade kple blaene |
| Faroese | fimmtieitt tusin og sekshundraðogfýrati |
| Filipino | limáng pû’t isáng libó’t anim na daán at ápat na pû |
| Finnish | viisikymmentäyksituhattakuusisataaneljäkymmentä |
| French | cinquante et un mille six cent quarante |
| Greek | πενήντα μία χίλιάδες εξακόσια σαράντα |
| German | einundfünfzigtausendsechshundertvierzig |
| Hebrew | חמישים ואחד אלף שש מאות ארבעים |
| Hindi | इक्यावन हज़ार छह सौ चालीस |
| Hungarian | ötvenegyezerhatszáznegyven |
| Icelandic | fimmtíu og eitt þúsund og sexhundrað og fjörutíu |
| Indonesian | lima puluh satu ribu enam ratus empat puluh |
| Italian | cinquant e unmilaseicentoquaranta |
| Japanese | 五万千六百四十 |
| Korean | 오만 천육백사십 |
| Latvian | piecdesmit viens tūkstoši sešsimt četrdesmit |
| Lithuanian | penkiasdešimt vienas tūkstantis šeši šimtai keturiasdešimt |
| Norwegian | femtiett tusen seks hundre og førti |
| Persian | پنجاه و یک هزار و ششصد و چهل |
| Polish | pięćdziesiąt jeden tysięcy sześćset czterdzieści |
| Portuguese | cinquenta e um mil seiscentos e quarenta |
| Romanian | cincizeci şi una mii şase sute patruzeci |
| Russian | пятьдесят одна тысяча шестьсот сорок |
| Serbian | педесет и једна хиљада шестсто четрдесет |
| Slovak | päťdesiatjedna tisíc šesťsto štyridsať |
| Slovene | petdeset ena tisuću šesto štirideset |
| Spanish | cincuenta y un mil seiscientos cuarenta |
| Swahili | elfu hamsini na moja, mia sita na arobaini |
| Swedish | femtioentusensexhundrafyrtio |
| Thai | ห้าหมื่นหนึ่งพันหกร้อยสี่สิบ |
| Turkish | elli bir bin altı yüz kırk |
| Ukrainian | пʼятдесят одна тисяча шістсот сорок |
| Vietnamese | năm mươi mốt nghìn sáu trăm bốn mươi |
| Number 51640 reversed | 04615 | |
| Unicode Character | U+C9B8 | 즸 |
| Unix Timestamp | Thu, 01 Jan 1970 14:20:40 +0000 | |