Names of 21961
| Nominal | 21961 |
| Cardinal | twenty-one thousand nine hundred sixty-one |
| Ordinal | 21,961st |
| This number as US currency | twenty-one thousand nine hundred sixty-one dollars |
| Is 21961 an odd number? | 21961 is an odd number |
| Is 21961 an even number? | 21961 is NOT an even number |
| Is 21961 a palindrome? | 21961 is NOT a palindrome number |
| Is 21961 a triangle number? | 21961 is NOT a triangle number |
21961 in other Bases
| Base 2 (Binary) | 1010101110010012 |
| Base 3 (Ternary) | 10100101013 |
| Base 4 (Quaternary) | 111130214 |
| Base 5 (Quinary) | 12003215 |
| Base 6 (Senary) | 2454016 |
| Base 8 (Octal) | 527118 |
| Base 12 (Duodecimal) | 1086112 |
| Base 16 (Hexadecimal) | 55C916 |
| Base 20 (Vigesimal) | 2EI120 |
Primes and Factors tests for 21961
| Is 21961 a Prime Number? | 21961 is a prime |
| Is 21961 a perfect number? | 21961 is NOT a perfect number |
| Is 21961 a Mersenne Prime? | 21961 is NOT a Mersenne prime |
| Is 21961 a Fermat Prime? | 21961 is NOT a Fermat prime |
| Is 21961 a Fibonacci Prime? | 21961 is NOT a Fibonacci prime |
| Is 21961 a Partition Prime? | 21961 is NOT a Partition prime |
| Is 21961 a Pell Prime? | 21961 is NOT a Pell prime |
| Prime Factors | Prime factors of 21961 |
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21961 in other Numerals
| 21961 in Roman Numeral | XXMCMLXI |
| 21961 in Chinese Numeral | 貳萬壹仟玖佰陸拾壹 |
| 21961 in Egyptian Numeral | 𓂮𓆼𓍪𓎋𓏺 |
| 21961 in Babylonian Numeral |   |
Roots and stuff for 21961
| Is 21961 a square number? | 21961 is NOT a square number |
| Is 21961 a cube number? | 21961 is NOT a cube number |
| Square root of the number 21961 | 148.19244245237 |
| Cube root of the number 21961 | 28.003826007791 |
Recreational math for 21961
| Number 21961 reversed | 16912 |
| Sum of the digits | 19 |
| No of digits | 5 |