Names of 155
| Nominal | 155 |
| Cardinal | one hundred fifty-five |
| Ordinal | 155th |
| This number as US currency | one hundred fifty-five dollars |
| Is 155 an odd number? | 155 is an odd number |
| Is 155 an even number? | 155 is NOT an even number |
| Is 155 a palindrome? | 155 is NOT a palindrome number |
| Is 155 a triangle number? | 155 is NOT a triangle number |
155 in other Bases
| Base 2 (Binary) | 100110112 |
| Base 3 (Ternary) | 122023 |
| Base 4 (Quaternary) | 21234 |
| Base 5 (Quinary) | 11105 |
| Base 6 (Senary) | 4156 |
| Base 8 (Octal) | 2338 |
| Base 12 (Duodecimal) | 10B12 |
| Base 16 (Hexadecimal) | 9B16 |
| Base 20 (Vigesimal) | 7F20 |
Primes and Factors tests for 155
| Is 155 a Prime Number? | 155 is NOT a prime |
| Is 155 a perfect number? | 155 is NOT a perfect number |
| Is 155 a Mersenne Prime? | 155 is NOT a Mersenne prime |
| Is 155 a Fermat Prime? | 155 is NOT a Fermat prime |
| Is 155 a Fibonacci Prime? | 155 is NOT a Fibonacci prime |
| Is 155 a Partition Prime? | 155 is NOT a Partition prime |
| Is 155 a Pell Prime? | 155 is NOT a Pell prime |
| Prime Factors | Prime factors of 155 |
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155 in other Numerals
| 155 in Roman Numeral | CLV |
| 155 in Chinese Numeral | 壹佰伍拾伍 |
| 155 in Egyptian Numeral | 𓍢𓎊𓏾 |
| 155 in Babylonian Numeral |   |
Roots and stuff for 155
| Is 155 a square number? | 155 is NOT a square number |
| Is 155 a cube number? | 155 is NOT a cube number |
| Square root of the number 155 | 12.449899597989 |
| Cube root of the number 155 | 5.3716853549448 |
Recreational math for 155
| Number 155 reversed | 551 |
| Sum of the digits | 11 |
| No of digits | 3 |