56557256 has 16 divisors (see below), whose sum is σ = 121194240. Its totient is φ = 24238800.

The previous prime is 56557247. The next prime is 56557289. The reversal of 56557256 is 65275565.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 504920 + ... + 505031.

It is an arithmetic number, because the mean of its divisors is an integer number (7574640).

Almost surely, 2^56557256 is an apocalyptic number.

56557256 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

56557256 is an abundant number, since it is smaller than the sum of its proper divisors (64636984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56557256 is a wasteful number, since it uses less digits than its factorization.

56557256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009964 (or 1009960 counting only the distinct ones).

The product of its digits is 315000, while the sum is 41.

The square root of 56557256 is about 7520.4558372482. The cubic root of 56557256 is about 383.8510888180.

The spelling of 56557256 in words is "fifty-six million, five hundred fifty-seven thousand, two hundred fifty-six".