561728162 has 6 divisors (see below), whose sum is σ = 842642523. Its totient is φ = 280847322.

The previous prime is 561728159. The next prime is 561728177. The reversal of 561728162 is 261827165.

It can be written as a sum of positive squares in only one way, i.e., 280864081 + 280864081 = 16759^2 + 16759^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=16759.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 25139 + ... + 41897.

Almost surely, 2^561728162 is an apocalyptic number.

561728162 is a deficient number, since it is larger than the sum of its proper divisors (280914361).

561728162 is an frugal number, since it uses more digits than its factorization.

561728162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33520 (or 16761 counting only the distinct ones).

The product of its digits is 40320, while the sum is 38.

The square root of 561728162 is about 23700.8050918107. The cubic root of 561728162 is about 825.1040760037.

The spelling of 561728162 in words is "five hundred sixty-one million, seven hundred twenty-eight thousand, one hundred sixty-two".