56566272 has 80 divisors (see below), whose sum is σ = 172256832. Its totient is φ = 16158720.

The previous prime is 56566271. The next prime is 56566273. The reversal of 56566272 is 27266565.

It is an interprime number because it is at equal distance from previous prime (56566271) and next prime (56566273).

It is a self number, because there is not a number n which added to its sum of digits gives 56566272.

It is not an unprimeable number, because it can be changed into a prime (56566271) 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, 8122 + ... + 13382.

Almost surely, 2^56566272 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 56566272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86128416).

56566272 is an abundant number, since it is smaller than the sum of its proper divisors (115690560).

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

56566272 is an equidigital number, since it uses as much as digits as its factorization.

56566272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5289 (or 5273 counting only the distinct ones).

The product of its digits is 151200, while the sum is 39.

The square root of 56566272 is about 7521.0552451102. The cubic root of 56566272 is about 383.8714847717.

The spelling of 56566272 in words is "fifty-six million, five hundred sixty-six thousand, two hundred seventy-two".