56161722 has 16 divisors (see below), whose sum is σ = 117207360. Its totient is φ = 17906592.

The previous prime is 56161697. The next prime is 56161789. The reversal of 56161722 is 22716165.

It is a self number, because there is not a number n which added to its sum of digits gives 56161722.

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, 203347 + ... + 203622.

It is an arithmetic number, because the mean of its divisors is an integer number (7325460).

Almost surely, 2^56161722 is an apocalyptic number.

56161722 is an abundant number, since it is smaller than the sum of its proper divisors (61045638).

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

56161722 is a wasteful number, since it uses less digits than its factorization.

56161722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406997.

The product of its digits is 5040, while the sum is 30.

The square root of 56161722 is about 7494.1124891477. The cubic root of 56161722 is about 382.9541719487.

Adding to 56161722 its reverse (22716165), we get a palindrome (78877887).

The spelling of 56161722 in words is "fifty-six million, one hundred sixty-one thousand, seven hundred twenty-two".