56665312 has 24 divisors (see below), whose sum is σ = 121702392. Its totient is φ = 25756800.

The previous prime is 56665309. The next prime is 56665327. The reversal of 56665312 is 21356665.

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, 80139 + ... + 80842.

It is an arithmetic number, because the mean of its divisors is an integer number (5070933).

Almost surely, 2^56665312 is an apocalyptic number.

It is an amenable number.

56665312 is an abundant number, since it is smaller than the sum of its proper divisors (65037080).

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

56665312 is a wasteful number, since it uses less digits than its factorization.

56665312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161002 (or 160994 counting only the distinct ones).

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

The square root of 56665312 is about 7527.6365480807. The cubic root of 56665312 is about 384.0953900752.

It can be divided in two parts, 566653 and 12, that added together give a palindrome (566665).

The spelling of 56665312 in words is "fifty-six million, six hundred sixty-five thousand, three hundred twelve".