56720122 has 16 divisors (see below), whose sum is σ = 86935680. Its totient is φ = 27746272.

The previous prime is 56720113. The next prime is 56720159. The reversal of 56720122 is 22102765.

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, 26463 + ... + 28525.

It is an arithmetic number, because the mean of its divisors is an integer number (5433480).

Almost surely, 2^56720122 is an apocalyptic number.

56720122 is a deficient number, since it is larger than the sum of its proper divisors (30215558).

56720122 is a wasteful number, since it uses less digits than its factorization.

56720122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2357.

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

The square root of 56720122 is about 7531.2762530663. The cubic root of 56720122 is about 384.2191900013.

Adding to 56720122 its reverse (22102765), we get a palindrome (78822887).

The spelling of 56720122 in words is "fifty-six million, seven hundred twenty thousand, one hundred twenty-two".