56501616 has 80 divisors (see below), whose sum is σ = 154990080. Its totient is φ = 17698560.

The previous prime is 56501609. The next prime is 56501617. The reversal of 56501616 is 61610565.

56501616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×56501616² = 6384865221222912, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56501617) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 66925 + ... + 67763.

It is an arithmetic number, because the mean of its divisors is an integer number (1937376).

Almost surely, 2^56501616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56501616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77495040).

56501616 is an abundant number, since it is smaller than the sum of its proper divisors (98488464).

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

56501616 is a wasteful number, since it uses less digits than its factorization.

56501616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934 (or 928 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 56501616 is about 7516.7556831388. The cubic root of 56501616 is about 383.7251722771.

The spelling of 56501616 in words is "fifty-six million, five hundred one thousand, six hundred sixteen".