56528661 has 8 divisors (see below), whose sum is σ = 86138944. Its totient is φ = 32302080.

The previous prime is 56528657. The next prime is 56528671. The reversal of 56528661 is 16682565.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56528661 - 2² = 56528657 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56528671) 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, 1345900 + ... + 1345941.

It is an arithmetic number, because the mean of its divisors is an integer number (10767368).

Almost surely, 2^56528661 is an apocalyptic number.

It is an amenable number.

56528661 is a deficient number, since it is larger than the sum of its proper divisors (29610283).

56528661 is a wasteful number, since it uses less digits than its factorization.

56528661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2691851.

The product of its digits is 86400, while the sum is 39.

The square root of 56528661 is about 7518.5544488286. The cubic root of 56528661 is about 383.7863869977.

The spelling of 56528661 in words is "fifty-six million, five hundred twenty-eight thousand, six hundred sixty-one".