Names of 55991
| Nominal | 55991 |
| Cardinal | fifty-five thousand nine hundred ninety-one |
| Ordinal | 55,991st |
| This number as US currency | fifty-five thousand nine hundred ninety-one dollars |
| Is 55991 an odd number? | 55991 is an odd number |
| Is 55991 an even number? | 55991 is NOT an even number |
| Is 55991 a palindrome? | 55991 is NOT a palindrome number |
| Is 55991 a triangle number? | 55991 is NOT a triangle number |
55991 in other Bases
| Base 2 (Binary) | 11011010101101112 |
| Base 3 (Ternary) | 22112102023 |
| Base 4 (Quaternary) | 312223134 |
| Base 5 (Quinary) | 32424315 |
| Base 6 (Senary) | 11111156 |
| Base 8 (Octal) | 1552678 |
| Base 12 (Duodecimal) | 2849B12 |
| Base 16 (Hexadecimal) | DAB716 |
| Base 20 (Vigesimal) | 6JJB20 |
Primes and Factors tests for 55991
| Is 55991 a Prime Number? | 55991 is NOT a prime |
| Is 55991 a perfect number? | 55991 is NOT a perfect number |
| Is 55991 a Mersenne Prime? | 55991 is NOT a Mersenne prime |
| Is 55991 a Fermat Prime? | 55991 is NOT a Fermat prime |
| Is 55991 a Fibonacci Prime? | 55991 is NOT a Fibonacci prime |
| Is 55991 a Partition Prime? | 55991 is NOT a Partition prime |
| Is 55991 a Pell Prime? | 55991 is NOT a Pell prime |
| Prime Factors | Prime factors of 55991 |
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55991 in other Numerals
| 55991 in Roman Numeral | LVCMXCI |
| 55991 in Chinese Numeral | 伍萬伍仟玖佰玖拾壹 |
| 55991 in Egyptian Numeral | 𓂱𓇀𓍪𓎎𓏺 |
| 55991 in Babylonian Numeral |    |
Roots and stuff for 55991
| Is 55991 a square number? | 55991 is NOT a square number |
| Is 55991 a cube number? | 55991 is NOT a cube number |
| Square root of the number 55991 | 236.62417458916 |
| Cube root of the number 55991 | 38.256573976515 |
Recreational math for 55991
| Number 55991 reversed | 19955 |
| Sum of the digits | 29 |
| No of digits | 5 |