# Number 91

### Names of 91

 Nominal 91 Cardinal ninety-one Ordinal 91st This number as US currency ninety-one dollars

### Properties (and some facts) of 91

 Is 91 an odd number? 91 is an odd number Is 91 an even number? 91 is NOT an even number Is 91 a palindrome? 91 is NOT a palindrome number Is 91 a triangle number? 91 is a triangle number

### 91 in other Bases

 Base 2 (Binary) 10110112 Base 3 (Ternary) 101013 Base 4 (Quaternary) 11234 Base 5 (Quinary) 3315 Base 6 (Senary) 2316 Base 8 (Octal) 1338 Base 12 (Duodecimal) 7712 Base 16 (Hexadecimal) 5B16 Base 20 (Vigesimal) 4B20

### Primes and Factors tests for 91

 Is 91 a Prime Number? 91 is NOT a prime Is 91 a perfect number? 91 is NOT a perfect number Is 91 a Mersenne Prime? 91 is NOT a Mersenne prime Is 91 a Fermat Prime? 91 is NOT a Fermat prime Is 91 a Fibonacci Prime? 91 is NOT a Fibonacci prime Is 91 a Partition Prime? 91 is NOT a Partition prime Is 91 a Pell Prime? 91 is NOT a Pell prime Prime Factors Prime factors of 91

### 91 in other Numerals

 91 in Roman Numeral XCI 91 in Chinese Numeral 玖拾壹 91 in Egyptian Numeral 𓎎𓏺 91 in Babylonian Numeral

### Roots and stuff for 91

 Is 91 a square number? 91 is NOT a square number Is 91 a cube number? 91 is NOT a cube number Square root of the number 91 9.5393920141695 Cube root of the number 91 4.4979414452754

### Recreational math for 91

 Number 91 reversed 19 Sum of the digits 10 No of digits 2

### Arithmetic Tables for 91

 Multiplication Table 91 Addition Table 91 Subtraction Table 91 Division Table 91

### Other pages about 91

 Logarithm Table for base 91 Prime factorization of 91