56531250 has 112 divisors (see below), whose sum is σ = 159372960. Its totient is φ = 14850000.

The previous prime is 56531249. The next prime is 56531257. The reversal of 56531250 is 5213565.

56531250 is a `hidden beast` number, since 5 + 653 + 1 + 2 + 5 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (56531257) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 843717 + ... + 843783.

Almost surely, 2^56531250 is an apocalyptic number.

56531250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 56531250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79686480).

56531250 is an abundant number, since it is smaller than the sum of its proper divisors (102841710).

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

56531250 is an frugal number, since it uses more digits than its factorization.

56531250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 56531250 is about 7518.7266209113. The cubic root of 56531250 is about 383.7922460184.

It can be divided in two parts, 5653 and 1250, that added together give a triangular number (6903 = T₁₁₇).

The spelling of 56531250 in words is "fifty-six million, five hundred thirty-one thousand, two hundred fifty".