561476173 has 4 divisors (see below), whose sum is σ = 562336668. Its totient is φ = 560615680.

The previous prime is 561476131. The next prime is 561476191. The reversal of 561476173 is 371674165.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 371674165 = 5 ⋅74334833.

It can be written as a sum of positive squares in 2 ways, for example, as 41499364 + 519976809 = 6442^2 + 22803^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-561476173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561471173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 429268 + ... + 430573.

It is an arithmetic number, because the mean of its divisors is an integer number (140584167).

Almost surely, 2^561476173 is an apocalyptic number.

It is an amenable number.

561476173 is a deficient number, since it is larger than the sum of its proper divisors (860495).

561476173 is an equidigital number, since it uses as much as digits as its factorization.

561476173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860494.

The product of its digits is 105840, while the sum is 40.

The square root of 561476173 is about 23695.4884524460. The cubic root of 561476173 is about 824.9806780905.

The spelling of 561476173 in words is "five hundred sixty-one million, four hundred seventy-six thousand, one hundred seventy-three".