56935809 has 24 divisors (see below), whose sum is σ = 97024512. Its totient is φ = 31484160.

The previous prime is 56935793. The next prime is 56935819. The reversal of 56935809 is 90853965.

56935809 is a `hidden beast` number, since 5 + 69 + 3 + 580 + 9 = 666.

It is not a de Polignac number, because 56935809 - 2⁴ = 56935793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56935819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12624 + ... + 16529.

It is an arithmetic number, because the mean of its divisors is an integer number (4042688).

Almost surely, 2^56935809 is an apocalyptic number.

It is an amenable number.

56935809 is a deficient number, since it is larger than the sum of its proper divisors (40088703).

56935809 is a wasteful number, since it uses less digits than its factorization.

56935809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29197 (or 29194 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 45.

The square root of 56935809 is about 7545.5820849024. The cubic root of 56935809 is about 384.7055915317.

The spelling of 56935809 in words is "fifty-six million, nine hundred thirty-five thousand, eight hundred nine".