56117656 has 16 divisors (see below), whose sum is σ = 120252240. Its totient is φ = 24050400.

The previous prime is 56117651. The next prime is 56117681. The reversal of 56117656 is 65671165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56117651) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 500995 + ... + 501106.

It is an arithmetic number, because the mean of its divisors is an integer number (7515765).

Almost surely, 2^56117656 is an apocalyptic number.

56117656 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

56117656 is an abundant number, since it is smaller than the sum of its proper divisors (64134584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56117656 is a wasteful number, since it uses less digits than its factorization.

56117656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002114 (or 1002110 counting only the distinct ones).

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

The square root of 56117656 is about 7491.1718709425. The cubic root of 56117656 is about 382.8539870217.

The spelling of 56117656 in words is "fifty-six million, one hundred seventeen thousand, six hundred fifty-six".