Names of 20997
| Nominal | 20997 |
| Cardinal | twenty thousand nine hundred ninety-seven |
| Ordinal | 20,997th |
| This number as US currency | twenty thousand nine hundred ninety-seven dollars |
| Is 20997 an odd number? | 20997 is an odd number |
| Is 20997 an even number? | 20997 is NOT an even number |
| Is 20997 a palindrome? | 20997 is NOT a palindrome number |
| Is 20997 a triangle number? | 20997 is NOT a triangle number |
20997 in other Bases
| Base 2 (Binary) | 1010010000001012 |
| Base 3 (Ternary) | 10012102003 |
| Base 4 (Quaternary) | 110200114 |
| Base 5 (Quinary) | 11324425 |
| Base 6 (Senary) | 2411136 |
| Base 8 (Octal) | 510058 |
| Base 12 (Duodecimal) | 1019912 |
| Base 16 (Hexadecimal) | 520516 |
| Base 20 (Vigesimal) | 2C9H20 |
Primes and Factors tests for 20997
| Is 20997 a Prime Number? | 20997 is NOT a prime |
| Is 20997 a perfect number? | 20997 is NOT a perfect number |
| Is 20997 a Mersenne Prime? | 20997 is NOT a Mersenne prime |
| Is 20997 a Fermat Prime? | 20997 is NOT a Fermat prime |
| Is 20997 a Fibonacci Prime? | 20997 is NOT a Fibonacci prime |
| Is 20997 a Partition Prime? | 20997 is NOT a Partition prime |
| Is 20997 a Pell Prime? | 20997 is NOT a Pell prime |
| Prime Factors | Prime factors of 20997 |
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20997 in other Numerals
| 20997 in Roman Numeral | XXCMXCVII |
| 20997 in Chinese Numeral | 貳萬玖佰玖拾柒 |
| 20997 in Egyptian Numeral | 𓂮𓍪𓎎𓐀 |
| 20997 in Babylonian Numeral |    |
Roots and stuff for 20997
| Is 20997 a square number? | 20997 is NOT a square number |
| Is 20997 a cube number? | 20997 is NOT a cube number |
| Square root of the number 20997 | 144.9034161088 |
| Cube root of the number 20997 | 27.587927927828 |
Recreational math for 20997
| Number 20997 reversed | 79902 |
| Sum of the digits | 27 |
| No of digits | 5 |