56645072 has 20 divisors (see below), whose sum is σ = 119727456. Its totient is φ = 25747680.

The previous prime is 56645063. The next prime is 56645101. The reversal of 56645072 is 27054665.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 160748 + ... + 161099.

Almost surely, 2^56645072 is an apocalyptic number.

It is an amenable number.

56645072 is an abundant number, since it is smaller than the sum of its proper divisors (63082384).

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

56645072 is a wasteful number, since it uses less digits than its factorization.

56645072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321866 (or 321860 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 56645072 is about 7526.2920485456. The cubic root of 56645072 is about 384.0496535908.

The spelling of 56645072 in words is "fifty-six million, six hundred forty-five thousand, seventy-two".