56215356 has 12 divisors (see below), whose sum is σ = 131169192. Its totient is φ = 18738448.

The previous prime is 56215349. The next prime is 56215361. The reversal of 56215356 is 65351265.

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

It is a congruent number.

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, 2342295 + ... + 2342318.

It is an arithmetic number, because the mean of its divisors is an integer number (10930766).

Almost surely, 2^56215356 is an apocalyptic number.

It is an amenable number.

56215356 is an abundant number, since it is smaller than the sum of its proper divisors (74953836).

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

56215356 is a wasteful number, since it uses less digits than its factorization.

56215356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4684620 (or 4684618 counting only the distinct ones).

The product of its digits is 27000, while the sum is 33.

The square root of 56215356 is about 7497.6900442736. The cubic root of 56215356 is about 383.0760392306.

The spelling of 56215356 in words is "fifty-six million, two hundred fifteen thousand, three hundred fifty-six".