56538402 has 24 divisors (see below), whose sum is σ = 115068336. Its totient is φ = 18519864.

The previous prime is 56538401. The next prime is 56538431. The reversal of 56538402 is 20483565.

It is not an unprimeable number, because it can be changed into a prime (56538401) 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, 19533 + ... + 22239.

It is an arithmetic number, because the mean of its divisors is an integer number (4794514).

Almost surely, 2^56538402 is an apocalyptic number.

56538402 is an abundant number, since it is smaller than the sum of its proper divisors (58529934).

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

56538402 is a wasteful number, since it uses less digits than its factorization.

56538402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2830 (or 2771 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 56538402 is about 7519.2022183208. The cubic root of 56538402 is about 383.8084303789.

The spelling of 56538402 in words is "fifty-six million, five hundred thirty-eight thousand, four hundred two".