56513611 has 12 divisors (see below), whose sum is σ = 71717400. Its totient is φ = 44036160.

The previous prime is 56513591. The next prime is 56513617. The reversal of 56513611 is 11631565.

It is not a de Polignac number, because 56513611 - 2²³ = 48125003 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56513611.

It is not an unprimeable number, because it can be changed into a prime (56513617) 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, 51886 + ... + 52963.

It is an arithmetic number, because the mean of its divisors is an integer number (5976450).

Almost surely, 2^56513611 is an apocalyptic number.

56513611 is a deficient number, since it is larger than the sum of its proper divisors (15203789).

56513611 is a wasteful number, since it uses less digits than its factorization.

56513611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104874 (or 104867 counting only the distinct ones).

The product of its digits is 2700, while the sum is 28.

The square root of 56513611 is about 7517.5535249175. The cubic root of 56513611 is about 383.7523246437.

The spelling of 56513611 in words is "fifty-six million, five hundred thirteen thousand, six hundred eleven".