56695509 has 12 divisors (see below), whose sum is σ = 88193196. Its totient is φ = 34889472.

The previous prime is 56695501. The next prime is 56695511. The reversal of 56695509 is 90559665.

56695509 is a `hidden beast` number, since 56 + 6 + 95 + 509 = 666.

56695509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 22297284 + 34398225 = 4722^2 + 5865^2 .

It is not a de Polignac number, because 56695509 - 2³ = 56695501 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56695501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 242172 + ... + 242405.

It is an arithmetic number, because the mean of its divisors is an integer number (7349433).

Almost surely, 2^56695509 is an apocalyptic number.

It is an amenable number.

56695509 is a deficient number, since it is larger than the sum of its proper divisors (31497687).

56695509 is a wasteful number, since it uses less digits than its factorization.

56695509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484596 (or 484593 counting only the distinct ones).

The product of its (nonzero) digits is 364500, while the sum is 45.

The square root of 56695509 is about 7529.6420233634. The cubic root of 56695509 is about 384.1636062284.

The spelling of 56695509 in words is "fifty-six million, six hundred ninety-five thousand, five hundred nine".