56980809 has 12 divisors (see below), whose sum is σ = 82371952. Its totient is φ = 37956600.

The previous prime is 56980801. The next prime is 56980811. The reversal of 56980809 is 90808965.

56980809 is a `hidden beast` number, since 569 + 8 + 0 + 80 + 9 = 666.

It is not a de Polignac number, because 56980809 - 2³ = 56980801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56980801) 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, 17694 + ... + 20664.

Almost surely, 2^56980809 is an apocalyptic number.

It is an amenable number.

56980809 is a deficient number, since it is larger than the sum of its proper divisors (25391143).

56980809 is a wasteful number, since it uses less digits than its factorization.

56980809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5108 (or 5105 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 56980809 is about 7548.5633732519. The cubic root of 56980809 is about 384.8069172940.

The spelling of 56980809 in words is "fifty-six million, nine hundred eighty thousand, eight hundred nine".