The number 55

Representation numerals

Greek numeral

νεʹ

Arabic numeral

٥٥

Roman numeral

LV

Maya numeral

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Chinese numeral

五十五

Hebrew numeral

נה
Numeral systems
Binary: 110111
Septimal (base 7): 106
Octal: 67
Hexadecimal: 37
Base 24: 27
Factorization
55 = 5 × 11
55 has 4 divisors: 1, 5, 11, 55
Sum of all divisors other than 55: 17
Sums & differences
Difference of 2 squares: 55 = 82 - 32 = 282 - 272
Characteristics
55 is a Fibonacci number
55 is a triangular number

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The next triangular is: 66
55 is a heptagonal number
55 is a palindromic number in decimal system
Related primes
The 55th prime number is: 257
Previous prime number: 53 — Next prime number: 59
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