56871900 has 108 divisors (see below), whose sum is σ = 184493400. Its totient is φ = 14636160.

The previous prime is 56871877. The next prime is 56871901. The reversal of 56871900 is 917865.

56871900 is a `hidden beast` number, since 568 + 7 + 1 + 90 + 0 = 666.

It is a super-2 number, since 2×56871900² = 6468826019220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56871901) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 25011 + ... + 27189.

Almost surely, 2^56871900 is an apocalyptic number.

56871900 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56871900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92246700).

56871900 is an abundant number, since it is smaller than the sum of its proper divisors (127621500).

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

56871900 is a wasteful number, since it uses less digits than its factorization.

56871900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2228 (or 2218 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 56871900 is about 7541.3460336998. The cubic root of 56871900 is about 384.5615968885.

The spelling of 56871900 in words is "fifty-six million, eight hundred seventy-one thousand, nine hundred".