56555 has 4 divisors (see below), whose sum is σ = 67872. Its totient is φ = 45240.

The previous prime is 56543. The next prime is 56569. The reversal of 56555 is 55565.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55565 = 5 ⋅11113.

It is not a de Polignac number, because 56555 - 2⁸ = 56299 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 6 and base 12.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 56555.

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, 5651 + ... + 5660.

It is an arithmetic number, because the mean of its divisors is an integer number (16968).

2⁵⁶⁵⁵⁵ is an apocalyptic number.

56555 is a deficient number, since it is larger than the sum of its proper divisors (11317).

56555 is a wasteful number, since it uses less digits than its factorization.

56555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11316.

The product of its digits is 3750, while the sum is 26.

The square root of 56555 is about 237.8129517078. The cubic root of 56555 is about 38.3845984966.

Subtracting from 56555 its reverse (55565), we obtain a triangular number (990 = T₄₄).

The spelling of 56555 in words is "fifty-six thousand, five hundred fifty-five".