56371563 has 12 divisors (see below), whose sum is σ = 84233760. Its totient is φ = 36284976.

The previous prime is 56371561. The next prime is 56371573. The reversal of 56371563 is 36517365.

It is a happy number.

56371563 is a `hidden beast` number, since 5 + 637 + 15 + 6 + 3 = 666.

It is not a de Polignac number, because 56371563 - 2¹ = 56371561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56371561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107731 + ... + 108252.

It is an arithmetic number, because the mean of its divisors is an integer number (7019480).

Almost surely, 2^56371563 is an apocalyptic number.

56371563 is a deficient number, since it is larger than the sum of its proper divisors (27862197).

56371563 is a wasteful number, since it uses less digits than its factorization.

56371563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216018 (or 216015 counting only the distinct ones).

The product of its digits is 56700, while the sum is 36.

The square root of 56371563 is about 7508.0998261877. The cubic root of 56371563 is about 383.4305320418.

The spelling of 56371563 in words is "fifty-six million, three hundred seventy-one thousand, five hundred sixty-three".