56577555 has 32 divisors (see below), whose sum is σ = 101977920. Its totient is φ = 29756160.

The previous prime is 56577541. The next prime is 56577569. The reversal of 56577555 is 55577565.

It is an interprime number because it is at equal distance from previous prime (56577541) and next prime (56577569).

It is not a de Polignac number, because 56577555 - 2⁸ = 56577299 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 56577555.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6985 + ... + 12725.

It is an arithmetic number, because the mean of its divisors is an integer number (3186810).

Almost surely, 2^56577555 is an apocalyptic number.

56577555 is a deficient number, since it is larger than the sum of its proper divisors (45400365).

56577555 is a wasteful number, since it uses less digits than its factorization.

56577555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5828 (or 5822 counting only the distinct ones).

The product of its digits is 918750, while the sum is 45.

The square root of 56577555 is about 7521.8053019205. The cubic root of 56577555 is about 383.8970060695.

The spelling of 56577555 in words is "fifty-six million, five hundred seventy-seven thousand, five hundred fifty-five".