56611911 has 8 divisors (see below), whose sum is σ = 75533040. Its totient is φ = 37716032.

The previous prime is 56611889. The next prime is 56611927. The reversal of 56611911 is 11911665.

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

It is a cyclic number.

It is not a de Polignac number, because 56611911 - 2⁵ = 56611879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56611981) 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, 246 + ... + 10643.

It is an arithmetic number, because the mean of its divisors is an integer number (9441630).

Almost surely, 2^56611911 is an apocalyptic number.

56611911 is a deficient number, since it is larger than the sum of its proper divisors (18921129).

56611911 is a wasteful number, since it uses less digits than its factorization.

56611911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12625.

The product of its digits is 1620, while the sum is 30.

The square root of 56611911 is about 7524.0887155854. The cubic root of 56611911 is about 383.9746958695.

The spelling of 56611911 in words is "fifty-six million, six hundred eleven thousand, nine hundred eleven".