Number 15

Names of 15

Nominal 15
Cardinal fifteen
Ordinal 15th
This number as US currency fifteen dollars

Properties (and some facts) of 15

Is 15 an odd number? 15 is an odd number
Is 15 an even number? 15 is NOT an even number
Is 15 a palindrome? 15 is NOT a palindrome number
Is 15 a triangle number? 15 is a triangle number

15 in other Bases

Base 2 (Binary) 11112
Base 3 (Ternary) 1203
Base 4 (Quaternary) 334
Base 5 (Quinary) 305
Base 6 (Senary) 236
Base 8 (Octal) 178
Base 12 (Duodecimal) 1312
Base 16 (Hexadecimal) F16
Base 20 (Vigesimal) F20

Primes and Factors tests for 15

Is 15 a Prime Number? 15 is NOT a prime
Is 15 a perfect number? 15 is NOT a perfect number
Is 15 a Mersenne Prime? 15 is NOT a Mersenne prime
Is 15 a Fermat Prime? 15 is NOT a Fermat prime
Is 15 a Fibonacci Prime? 15 is NOT a Fibonacci prime
Is 15 a Partition Prime? 15 is NOT a Partition prime
Is 15 a Pell Prime? 15 is NOT a Pell prime
Prime Factors Prime factors of 15

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15 in other Numerals

15 in Roman Numeral XV
15 in Chinese Numeral 壹拾伍
15 in Egyptian Numeral 𓎆𓏾
15 in Babylonian Numeral 15  

Roots and stuff for 15

Is 15 a square number? 15 is NOT a square number
Is 15 a cube number? 15 is NOT a cube number
Square root of the number 15 3.8729833462074
Cube root of the number 15 2.4662120743305

Recreational math for 15

Number 15 reversed 51
Sum of the digits 6
No of digits 2