56311800 has 96 divisors (see below), whose sum is σ = 176179200. Its totient is φ = 14878080.

The previous prime is 56311799. The next prime is 56311861. The reversal of 56311800 is 811365.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75831 + ... + 76569.

It is an arithmetic number, because the mean of its divisors is an integer number (1835200).

Almost surely, 2^56311800 is an apocalyptic number.

56311800 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 56311800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88089600).

56311800 is an abundant number, since it is smaller than the sum of its proper divisors (119867400).

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

56311800 is a wasteful number, since it uses less digits than its factorization.

56311800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885 (or 876 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 56311800 is about 7504.1188689945. The cubic root of 56311800 is about 383.2949846115.

The spelling of 56311800 in words is "fifty-six million, three hundred eleven thousand, eight hundred".