56321900 has 18 divisors (see below), whose sum is σ = 122218740. Its totient is φ = 22528720.

The previous prime is 56321899. The next prime is 56321929. The reversal of 56321900 is 912365.

It is a super-2 number, since 2×56321900² = 6344312839220000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56321900.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 281510 + ... + 281709.

It is an arithmetic number, because the mean of its divisors is an integer number (6789930).

Almost surely, 2^56321900 is an apocalyptic number.

56321900 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

56321900 is an abundant number, since it is smaller than the sum of its proper divisors (65896840).

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

56321900 is a wasteful number, since it uses less digits than its factorization.

56321900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563233 (or 563226 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 56321900 is about 7504.7918025752. The cubic root of 56321900 is about 383.3178989795.

The spelling of 56321900 in words is "fifty-six million, three hundred twenty-one thousand, nine hundred".