561697173 has 24 divisors (see below), whose sum is σ = 846806688. Its totient is φ = 372054384.

The previous prime is 561697163. The next prime is 561697177. The reversal of 561697173 is 371796165.

561697173 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 561697173 - 2¹⁷ = 561566101 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561697177) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30790 + ... + 45512.

It is an arithmetic number, because the mean of its divisors is an integer number (35283612).

Almost surely, 2^561697173 is an apocalyptic number.

It is an amenable number.

561697173 is a deficient number, since it is larger than the sum of its proper divisors (285109515).

561697173 is a wasteful number, since it uses less digits than its factorization.

561697173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14895 (or 14883 counting only the distinct ones).

The product of its digits is 238140, while the sum is 45.

The square root of 561697173 is about 23700.1513286308. The cubic root of 561697173 is about 825.0889028161.

The spelling of 561697173 in words is "five hundred sixty-one million, six hundred ninety-seven thousand, one hundred seventy-three".