56557655 has 32 divisors (see below), whose sum is σ = 86704128. Its totient is φ = 34387200.

The previous prime is 56557607. The next prime is 56557663. The reversal of 56557655 is 55675565.

56557655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56557655 - 2⁸ = 56557399 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13994 + ... + 17576.

It is an arithmetic number, because the mean of its divisors is an integer number (2709504).

Almost surely, 2^56557655 is an apocalyptic number.

56557655 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

56557655 is a deficient number, since it is larger than the sum of its proper divisors (30146473).

56557655 is a wasteful number, since it uses less digits than its factorization.

56557655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3647.

The product of its digits is 787500, while the sum is 44.

The square root of 56557655 is about 7520.4823648487. The cubic root of 56557655 is about 383.8519914798.

The spelling of 56557655 in words is "fifty-six million, five hundred fifty-seven thousand, six hundred fifty-five".