56122720 has 24 divisors (see below), whose sum is σ = 132590304. Its totient is φ = 22449024.

The previous prime is 56122709. The next prime is 56122723. The reversal of 56122720 is 2722165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56122723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175224 + ... + 175543.

It is an arithmetic number, because the mean of its divisors is an integer number (5524596).

Almost surely, 2^56122720 is an apocalyptic number.

It is an amenable number.

56122720 is an abundant number, since it is smaller than the sum of its proper divisors (76467584).

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

56122720 is a wasteful number, since it uses less digits than its factorization.

56122720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350782 (or 350774 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 56122720 is about 7491.5098611695. The cubic root of 56122720 is about 382.8655027930.

Adding to 56122720 its reverse (2722165), we get a palindrome (58844885).

The spelling of 56122720 in words is "fifty-six million, one hundred twenty-two thousand, seven hundred twenty".