56527809 has 8 divisors (see below), whose sum is σ = 81168192. Its totient is φ = 34786320.

The previous prime is 56527799. The next prime is 56527811. The reversal of 56527809 is 90872565.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56527809 - 2¹⁷ = 56396737 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56527829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 724677 + ... + 724754.

It is an arithmetic number, because the mean of its divisors is an integer number (10146024).

Almost surely, 2^56527809 is an apocalyptic number.

It is an amenable number.

56527809 is a deficient number, since it is larger than the sum of its proper divisors (24640383).

56527809 is a wasteful number, since it uses less digits than its factorization.

56527809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1449447.

The product of its (nonzero) digits is 151200, while the sum is 42.

The square root of 56527809 is about 7518.4977887873. The cubic root of 56527809 is about 383.7844588451.

The spelling of 56527809 in words is "fifty-six million, five hundred twenty-seven thousand, eight hundred nine".