56571256 has 16 divisors (see below), whose sum is σ = 121224240. Its totient is φ = 24244800.

The previous prime is 56571241. The next prime is 56571271. The reversal of 56571256 is 65217565.

It is an interprime number because it is at equal distance from previous prime (56571241) and next prime (56571271).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505045 + ... + 505156.

It is an arithmetic number, because the mean of its divisors is an integer number (7576515).

Almost surely, 2^56571256 is an apocalyptic number.

56571256 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

56571256 is an abundant number, since it is smaller than the sum of its proper divisors (64652984).

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

56571256 is a wasteful number, since it uses less digits than its factorization.

56571256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010214 (or 1010210 counting only the distinct ones).

The product of its digits is 63000, while the sum is 37.

The square root of 56571256 is about 7521.3865742960. The cubic root of 56571256 is about 383.8827586235.

It can be divided in two parts, 56 and 571256, that multiplied together give a square (31990336 = 5656²).

The spelling of 56571256 in words is "fifty-six million, five hundred seventy-one thousand, two hundred fifty-six".