56509659 has 6 divisors (see below), whose sum is σ = 81625076. Its totient is φ = 37673100.

The previous prime is 56509657. The next prime is 56509711. The reversal of 56509659 is 95690565.

It is not a de Polignac number, because 56509659 - 2¹ = 56509657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56509657) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3139417 + ... + 3139434.

Almost surely, 2^56509659 is an apocalyptic number.

56509659 is a deficient number, since it is larger than the sum of its proper divisors (25115417).

56509659 is a wasteful number, since it uses less digits than its factorization.

56509659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6278857 (or 6278854 counting only the distinct ones).

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

The square root of 56509659 is about 7517.2906688514. The cubic root of 56509659 is about 383.7433791612.

The spelling of 56509659 in words is "fifty-six million, five hundred nine thousand, six hundred fifty-nine".