56755 has 4 divisors (see below), whose sum is σ = 68112. Its totient is φ = 45400.

The previous prime is 56747. The next prime is 56767. The reversal of 56755 is 55765.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 56755 - 2³ = 56747 is a prime.

It is a super-2 number, since 2×56755² = 6442260050, which contains 22 as substring.

It is a Duffinian number.

56755 is a lucky number.

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5671 + ... + 5680.

It is an arithmetic number, because the mean of its divisors is an integer number (17028).

2⁵⁶⁷⁵⁵ is an apocalyptic number.

56755 is a deficient number, since it is larger than the sum of its proper divisors (11357).

56755 is a wasteful number, since it uses less digits than its factorization.

56755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11356.

The product of its digits is 5250, while the sum is 28.

The square root of 56755 is about 238.2330791473. The cubic root of 56755 is about 38.4297927791.

Subtracting from 56755 its reverse (55765), we obtain a triangular number (990 = T₄₄).

The spelling of 56755 in words is "fifty-six thousand, seven hundred fifty-five".