56572551 has 48 divisors (see below), whose sum is σ = 97843200. Its totient is φ = 30818880.

The previous prime is 56572543. The next prime is 56572553. The reversal of 56572551 is 15527565.

It is a happy number.

56572551 is a `hidden beast` number, since 56 + 57 + 2 + 551 = 666.

It is not a de Polignac number, because 56572551 - 2³ = 56572543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56572553) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 161925 + ... + 162273.

It is an arithmetic number, because the mean of its divisors is an integer number (2038400).

Almost surely, 2^56572551 is an apocalyptic number.

56572551 is a deficient number, since it is larger than the sum of its proper divisors (41270649).

56572551 is a wasteful number, since it uses less digits than its factorization.

56572551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476 (or 473 counting only the distinct ones).

The product of its digits is 52500, while the sum is 36.

The square root of 56572551 is about 7521.4726616534. The cubic root of 56572551 is about 383.8856878165.

The spelling of 56572551 in words is "fifty-six million, five hundred seventy-two thousand, five hundred fifty-one".