56257836 has 12 divisors (see below), whose sum is σ = 131268312. Its totient is φ = 18752608.

The previous prime is 56257829. The next prime is 56257849. The reversal of 56257836 is 63875265.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×56257836² = 6329888222805792, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2344065 + ... + 2344088.

It is an arithmetic number, because the mean of its divisors is an integer number (10939026).

Almost surely, 2^56257836 is an apocalyptic number.

It is an amenable number.

56257836 is an abundant number, since it is smaller than the sum of its proper divisors (75010476).

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

56257836 is a wasteful number, since it uses less digits than its factorization.

56257836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4688160 (or 4688158 counting only the distinct ones).

The product of its digits is 302400, while the sum is 42.

The square root of 56257836 is about 7500.5223818078. The cubic root of 56257836 is about 383.1725073728.

The spelling of 56257836 in words is "fifty-six million, two hundred fifty-seven thousand, eight hundred thirty-six".