56431120 has 20 divisors (see below), whose sum is σ = 131202540. Its totient is φ = 22572416.

The previous prime is 56431097. The next prime is 56431139. The reversal of 56431120 is 2113465.

It can be written as a sum of positive squares in 2 ways, for example, as 17842176 + 38588944 = 4224^2 + 6212^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 56431091 and 56431100.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 352615 + ... + 352774.

It is an arithmetic number, because the mean of its divisors is an integer number (6560127).

Almost surely, 2^56431120 is an apocalyptic number.

It is an amenable number.

56431120 is an abundant number, since it is smaller than the sum of its proper divisors (74771420).

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

56431120 is a wasteful number, since it uses less digits than its factorization.

56431120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705402 (or 705396 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 56431120 is about 7512.0649624454. The cubic root of 56431120 is about 383.5655169737.

Adding to 56431120 its reverse (2113465), we get a palindrome (58544585).

It can be divided in two parts, 564 and 31120, that added together give a square (31684 = 178²).

The spelling of 56431120 in words is "fifty-six million, four hundred thirty-one thousand, one hundred twenty".