56617028 has 36 divisors (see below), whose sum is σ = 109125828. Its totient is φ = 25683840.

The previous prime is 56617027. The next prime is 56617037. The reversal of 56617028 is 82071665.

It can be written as a sum of positive squares in 6 ways, for example, as 6801664 + 49815364 = 2608^2 + 7058^2 .

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56617027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40550 + ... + 41922.

It is an arithmetic number, because the mean of its divisors is an integer number (3031273).

Almost surely, 2^56617028 is an apocalyptic number.

It is an amenable number.

56617028 is a deficient number, since it is larger than the sum of its proper divisors (52508800).

56617028 is a wasteful number, since it uses less digits than its factorization.

56617028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1464 (or 1449 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 56617028 is about 7524.4287490812. The cubic root of 56617028 is about 383.9862643380.

The spelling of 56617028 in words is "fifty-six million, six hundred seventeen thousand, twenty-eight".