56609289 has 12 divisors (see below), whose sum is σ = 89202672. Its totient is φ = 34308600.

The previous prime is 56609263. The next prime is 56609299. The reversal of 56609289 is 98290665.

56609289 is a `hidden beast` number, since 566 + 0 + 9 + 2 + 89 = 666.

It is not a de Polignac number, because 56609289 - 2¹⁵ = 56576521 is a prime.

It is a super-2 number, since 2×56609289² = 6409223202171042, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56609209) 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, 285807 + ... + 286004.

It is an arithmetic number, because the mean of its divisors is an integer number (7433556).

Almost surely, 2^56609289 is an apocalyptic number.

It is an amenable number.

56609289 is a deficient number, since it is larger than the sum of its proper divisors (32593383).

56609289 is a wasteful number, since it uses less digits than its factorization.

56609289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571828 (or 571825 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 56609289 is about 7523.9144731981. The cubic root of 56609289 is about 383.9687678049.

The spelling of 56609289 in words is "fifty-six million, six hundred nine thousand, two hundred eighty-nine".