56215746 has 24 divisors (see below), whose sum is σ = 126001980. Its totient is φ = 18092256.

The previous prime is 56215721. The next prime is 56215751. The reversal of 56215746 is 64751265.

It is a happy number.

56215746 is a `hidden beast` number, since 562 + 1 + 57 + 46 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 53363025 + 2852721 = 7305^2 + 1689^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 56215746.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53325 + ... + 54368.

Almost surely, 2^56215746 is an apocalyptic number.

56215746 is an abundant number, since it is smaller than the sum of its proper divisors (69786234).

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

56215746 is a wasteful number, since it uses less digits than its factorization.

56215746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107730 (or 107727 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 56215746 is about 7497.7160522388. The cubic root of 56215746 is about 383.0769251054.

The spelling of 56215746 in words is "fifty-six million, two hundred fifteen thousand, seven hundred forty-six".