56213656 has 48 divisors (see below), whose sum is σ = 113475600. Its totient is φ = 26085312.

The previous prime is 56213639. The next prime is 56213657. The reversal of 56213656 is 65631265.

56213656 = 24² + 25² + ... + 552².

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56213657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 156405 + ... + 156763.

It is an arithmetic number, because the mean of its divisors is an integer number (2364075).

Almost surely, 2^56213656 is an apocalyptic number.

It is an amenable number.

56213656 is an abundant number, since it is smaller than the sum of its proper divisors (57261944).

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

56213656 is a wasteful number, since it uses less digits than its factorization.

56213656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448 (or 421 counting only the distinct ones).

The product of its digits is 32400, while the sum is 34.

The square root of 56213656 is about 7497.5766751665. The cubic root of 56213656 is about 383.0721776770.

The spelling of 56213656 in words is "fifty-six million, two hundred thirteen thousand, six hundred fifty-six".