56609145 has 32 divisors (see below), whose sum is σ = 101341440. Its totient is φ = 29980800.

The previous prime is 56609101. The next prime is 56609173. The reversal of 56609145 is 54190665.

56609145 is a `hidden beast` number, since 5 + 6 + 609 + 1 + 45 = 666.

It is not a de Polignac number, because 56609145 - 2⁸ = 56608889 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18997 + ... + 21773.

It is an arithmetic number, because the mean of its divisors is an integer number (3166920).

Almost surely, 2^56609145 is an apocalyptic number.

It is an amenable number.

56609145 is a deficient number, since it is larger than the sum of its proper divisors (44732295).

56609145 is a wasteful number, since it uses less digits than its factorization.

56609145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2942 (or 2936 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 56609145 is about 7523.9049037053. The cubic root of 56609145 is about 383.9684422308.

The spelling of 56609145 in words is "fifty-six million, six hundred nine thousand, one hundred forty-five".