Names of 16561
| Nominal | 16561 |
| Cardinal | sixteen thousand five hundred sixty-one |
| Ordinal | 16,561st |
| This number as US currency | sixteen thousand five hundred sixty-one dollars |
| Is 16561 an odd number? | 16561 is an odd number |
| Is 16561 an even number? | 16561 is NOT an even number |
| Is 16561 a palindrome? | 16561 is a palindrome number |
| Is 16561 a triangle number? | 16561 is NOT a triangle number |
16561 in other Bases
| Base 2 (Binary) | 1000000101100012 |
| Base 3 (Ternary) | 2112011013 |
| Base 4 (Quaternary) | 100023014 |
| Base 5 (Quinary) | 10122215 |
| Base 6 (Senary) | 2044016 |
| Base 8 (Octal) | 402618 |
| Base 12 (Duodecimal) | 970112 |
| Base 16 (Hexadecimal) | 40B116 |
| Base 20 (Vigesimal) | 218120 |
Primes and Factors tests for 16561
| Is 16561 a Prime Number? | 16561 is a prime |
| Is 16561 a perfect number? | 16561 is NOT a perfect number |
| Is 16561 a Mersenne Prime? | 16561 is NOT a Mersenne prime |
| Is 16561 a Fermat Prime? | 16561 is NOT a Fermat prime |
| Is 16561 a Fibonacci Prime? | 16561 is NOT a Fibonacci prime |
| Is 16561 a Partition Prime? | 16561 is NOT a Partition prime |
| Is 16561 a Pell Prime? | 16561 is NOT a Pell prime |
| Prime Factors | Prime factors of 16561 |
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16561 in other Numerals
| 16561 in Roman Numeral | XVMDLXI |
| 16561 in Chinese Numeral | 壹萬陸仟伍佰陸拾壹 |
| 16561 in Egyptian Numeral | 𓂭𓇁𓍦𓎋𓏺 |
| 16561 in Babylonian Numeral |    |
Roots and stuff for 16561
| Is 16561 a square number? | 16561 is NOT a square number |
| Is 16561 a cube number? | 16561 is NOT a cube number |
| Square root of the number 16561 | 128.68954891521 |
| Cube root of the number 16561 | 25.489551018212 |
Recreational math for 16561
| Number 16561 reversed | 16561 |
| Sum of the digits | 19 |
| No of digits | 5 |