56657472 has 56 divisors (see below), whose sum is σ = 150461472. Its totient is φ = 18816000.

The previous prime is 56657467. The next prime is 56657473. The reversal of 56657472 is 27475665.

It is not an unprimeable number, because it can be changed into a prime (56657473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93972 + ... + 94572.

It is an arithmetic number, because the mean of its divisors is an integer number (2686812).

Almost surely, 2^56657472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56657472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75230736).

56657472 is an abundant number, since it is smaller than the sum of its proper divisors (93804000).

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

56657472 is a wasteful number, since it uses less digits than its factorization.

56657472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1107 (or 1097 counting only the distinct ones).

The product of its digits is 352800, while the sum is 42.

The square root of 56657472 is about 7527.1157822901. The cubic root of 56657472 is about 384.0776752591.

The spelling of 56657472 in words is "fifty-six million, six hundred fifty-seven thousand, four hundred seventy-two".