56155 has 8 divisors (see below), whose sum is σ = 73584. Its totient is φ = 40800.

The previous prime is 56149. The next prime is 56167. The reversal of 56155 is 55165.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56155 - 2⁵ = 56123 is a prime.

It is a Duffinian number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 456 + ... + 565.

It is an arithmetic number, because the mean of its divisors is an integer number (9198).

2⁵⁶¹⁵⁵ is an apocalyptic number.

56155 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

56155 is a deficient number, since it is larger than the sum of its proper divisors (17429).

56155 is a wasteful number, since it uses less digits than its factorization.

56155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037.

The product of its digits is 750, while the sum is 22.

The square root of 56155 is about 236.9704622944. The cubic root of 56155 is about 38.2938892736.

Subtracting from 56155 its reverse (55165), we obtain a triangular number (990 = T₄₄).

It can be divided in two parts, 561 and 55, that added together give a palindrome (616).

The spelling of 56155 in words is "fifty-six thousand, one hundred fifty-five".