56611166 has 4 divisors (see below), whose sum is σ = 84916752. Its totient is φ = 28305582.

The previous prime is 56611157. The next prime is 56611187. The reversal of 56611166 is 66111665.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14152790 + ... + 14152793.

It is an arithmetic number, because the mean of its divisors is an integer number (21229188).

Almost surely, 2^56611166 is an apocalyptic number.

56611166 is a deficient number, since it is larger than the sum of its proper divisors (28305586).

56611166 is a wasteful number, since it uses less digits than its factorization.

56611166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28305585.

The product of its digits is 6480, while the sum is 32.

The square root of 56611166 is about 7524.0392077660. The cubic root of 56611166 is about 383.9730115219.

The spelling of 56611166 in words is "fifty-six million, six hundred eleven thousand, one hundred sixty-six".