56772570 has 64 divisors (see below), whose sum is σ = 144967680. Its totient is φ = 14188608.

The previous prime is 56772557. The next prime is 56772587. The reversal of 56772570 is 7527765.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58227 + ... + 59193.

It is an arithmetic number, because the mean of its divisors is an integer number (2265120).

Almost surely, 2^56772570 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56772570, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72483840).

56772570 is an abundant number, since it is smaller than the sum of its proper divisors (88195110).

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

56772570 is a wasteful number, since it uses less digits than its factorization.

56772570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099.

The product of its (nonzero) digits is 102900, while the sum is 39.

The square root of 56772570 is about 7534.7574612591. The cubic root of 56772570 is about 384.3375802028.

It can be divided in two parts, 567 and 72570, that added together give a palindrome (73137).

The spelling of 56772570 in words is "fifty-six million, seven hundred seventy-two thousand, five hundred seventy".