56653818 has 16 divisors (see below), whose sum is σ = 122023776. Its totient is φ = 17431920.

The previous prime is 56653789. The next prime is 56653859. The reversal of 56653818 is 81835665.

It is a self number, because there is not a number n which added to its sum of digits gives 56653818.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 363088 + ... + 363243.

It is an arithmetic number, because the mean of its divisors is an integer number (7626486).

Almost surely, 2^56653818 is an apocalyptic number.

56653818 is an abundant number, since it is smaller than the sum of its proper divisors (65369958).

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

56653818 is a wasteful number, since it uses less digits than its factorization.

56653818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726349.

The product of its digits is 172800, while the sum is 42.

The square root of 56653818 is about 7526.8730559244. The cubic root of 56653818 is about 384.0694183311.

The spelling of 56653818 in words is "fifty-six million, six hundred fifty-three thousand, eight hundred eighteen".