56611611 has 72 divisors (see below), whose sum is σ = 101582208. Its totient is φ = 30240000.

The previous prime is 56611589. The next prime is 56611627. The reversal of 56611611 is 11611665.

It is not a de Polignac number, because 56611611 - 2⁷ = 56611483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56611651) by changing a digit.

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 in 71 ways as a sum of consecutive naturals, for example, 560461 + ... + 560561.

It is an arithmetic number, because the mean of its divisors is an integer number (1410864).

Almost surely, 2^56611611 is an apocalyptic number.

56611611 is a deficient number, since it is larger than the sum of its proper divisors (44970597).

56611611 is a wasteful number, since it uses less digits than its factorization.

56611611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193 (or 183 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

The square root of 56611611 is about 7524.0687795899. The cubic root of 56611611 is about 383.9740176105.

The spelling of 56611611 in words is "fifty-six million, six hundred eleven thousand, six hundred eleven".