56121716 has 12 divisors (see below), whose sum is σ = 112243488. Its totient is φ = 24052152.

The previous prime is 56121707. The next prime is 56121731. The reversal of 56121716 is 61712165.

56121716 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

56121716 is an admirable number.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a pancake number, because a pancake can be divided into 56121716 parts by 10594 straight cuts.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1002146 + ... + 1002201.

It is an arithmetic number, because the mean of its divisors is an integer number (9353624).

Almost surely, 2^56121716 is an apocalyptic number.

It is an amenable number.

56121716 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

56121716 is a wasteful number, since it uses less digits than its factorization.

56121716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2004358 (or 2004356 counting only the distinct ones).

The product of its digits is 2520, while the sum is 29.

The square root of 56121716 is about 7491.4428516808. The cubic root of 56121716 is about 382.8632197054.

The spelling of 56121716 in words is "fifty-six million, one hundred twenty-one thousand, seven hundred sixteen".