Names of 55
| Nominal | 55 |
| Cardinal | fifty-five |
| Ordinal | 55th |
| This number as US currency | fifty-five dollars |
| Is 55 an odd number? | 55 is an odd number |
| Is 55 an even number? | 55 is NOT an even number |
| Is 55 a palindrome? | 55 is a palindrome number |
| Is 55 a triangle number? | 55 is a triangle number |
55 in other Bases
| Base 2 (Binary) | 1101112 |
| Base 3 (Ternary) | 20013 |
| Base 4 (Quaternary) | 3134 |
| Base 5 (Quinary) | 2105 |
| Base 6 (Senary) | 1316 |
| Base 8 (Octal) | 678 |
| Base 12 (Duodecimal) | 4712 |
| Base 16 (Hexadecimal) | 3716 |
| Base 20 (Vigesimal) | 2F20 |
Primes and Factors tests for 55
| Is 55 a Prime Number? | 55 is NOT a prime |
| Is 55 a perfect number? | 55 is NOT a perfect number |
| Is 55 a Mersenne Prime? | 55 is NOT a Mersenne prime |
| Is 55 a Fermat Prime? | 55 is NOT a Fermat prime |
| Is 55 a Fibonacci Prime? | 55 is NOT a Fibonacci prime |
| Is 55 a Partition Prime? | 55 is NOT a Partition prime |
| Is 55 a Pell Prime? | 55 is NOT a Pell prime |
| Prime Factors | Prime factors of 55 |
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55 in other Numerals
| 55 in Roman Numeral | LV |
| 55 in Chinese Numeral | 伍拾伍 |
| 55 in Egyptian Numeral | 𓎊𓏾 |
| 55 in Babylonian Numeral |  |
Roots and stuff for 55
| Is 55 a square number? | 55 is NOT a square number |
| Is 55 a cube number? | 55 is NOT a cube number |
| Square root of the number 55 | 7.4161984870957 |
| Cube root of the number 55 | 3.8029524607614 |
Recreational math for 55
| Number 55 reversed | 55 |
| Sum of the digits | 10 |
| No of digits | 2 |