56331420 has 24 divisors (see below), whose sum is σ = 157728144. Its totient is φ = 15021696.

The previous prime is 56331397. The next prime is 56331449. The reversal of 56331420 is 2413365.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 469369 + ... + 469488.

It is an arithmetic number, because the mean of its divisors is an integer number (6572006).

Almost surely, 2^56331420 is an apocalyptic number.

It is an amenable number.

56331420 is an abundant number, since it is smaller than the sum of its proper divisors (101396724).

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

56331420 is a wasteful number, since it uses less digits than its factorization.

56331420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938869 (or 938867 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 56331420 is about 7505.4260372080. The cubic root of 56331420 is about 383.3394949650.

Adding to 56331420 its reverse (2413365), we get a palindrome (58744785).

The spelling of 56331420 in words is "fifty-six million, three hundred thirty-one thousand, four hundred twenty".