561173 has 2 divisors, whose sum is σ = 561174. Its totient is φ = 561172.

The previous prime is 561161. The next prime is 561181. The reversal of 561173 is 371165.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 550564 + 10609 = 742^2 + 103^2 .

It is a cyclic number.

It is not a de Polignac number, because 561173 - 2⁶ = 561109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280586 + 280587.

It is an arithmetic number, because the mean of its divisors is an integer number (280587).

2⁵⁶¹¹⁷³ is an apocalyptic number.

It is an amenable number.

561173 is a deficient number, since it is larger than the sum of its proper divisors (1).

561173 is an equidigital number, since it uses as much as digits as its factorization.

561173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 630, while the sum is 23.

The square root of 561173 is about 749.1148109602. The cubic root of 561173 is about 82.4832166655.

The spelling of 561173 in words is "five hundred sixty-one thousand, one hundred seventy-three".