56531400 has 48 divisors (see below), whose sum is σ = 175249200. Its totient is φ = 15074880.

The previous prime is 56531359. The next prime is 56531429. The reversal of 56531400 is 413565.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46510 + ... + 47709.

It is an arithmetic number, because the mean of its divisors is an integer number (3651025).

Almost surely, 2^56531400 is an apocalyptic number.

56531400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

56531400 is an abundant number, since it is smaller than the sum of its proper divisors (118717800).

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

56531400 is a wasteful number, since it uses less digits than its factorization.

56531400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94238 (or 94229 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 56531400 is about 7518.7365959980. The cubic root of 56531400 is about 383.7925854695.

Adding to 56531400 its reverse (413565), we get a palindrome (56944965).

The spelling of 56531400 in words is "fifty-six million, five hundred thirty-one thousand, four hundred".