56171656 has 8 divisors (see below), whose sum is σ = 105321870. Its totient is φ = 28085824.

The previous prime is 56171629. The next prime is 56171663. The reversal of 56171656 is 65617165.

It can be written as a sum of positive squares in only one way, i.e., 54022500 + 2149156 = 7350^2 + 1466^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3510721 + ... + 3510736.

Almost surely, 2^56171656 is an apocalyptic number.

It is an amenable number.

56171656 is a deficient number, since it is larger than the sum of its proper divisors (49150214).

56171656 is a wasteful number, since it uses less digits than its factorization.

56171656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7021463 (or 7021459 counting only the distinct ones).

The product of its digits is 37800, while the sum is 37.

The square root of 56171656 is about 7494.7752467969. The cubic root of 56171656 is about 382.9767498560.

The spelling of 56171656 in words is "fifty-six million, one hundred seventy-one thousand, six hundred fifty-six".