56638452 has 24 divisors (see below), whose sum is σ = 142322656. Its totient is φ = 17427168.

The previous prime is 56638451. The next prime is 56638481. The reversal of 56638452 is 25483665.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 56638452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56638451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181378 + ... + 181689.

Almost surely, 2^56638452 is an apocalyptic number.

56638452 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

56638452 is an abundant number, since it is smaller than the sum of its proper divisors (85684204).

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

56638452 is a wasteful number, since it uses less digits than its factorization.

56638452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363087 (or 363085 counting only the distinct ones).

The product of its digits is 172800, while the sum is 39.

The square root of 56638452 is about 7525.8522440983. The cubic root of 56638452 is about 384.0346919612.

The spelling of 56638452 in words is "fifty-six million, six hundred thirty-eight thousand, four hundred fifty-two".