561342171 has 32 divisors (see below), whose sum is σ = 816641280. Its totient is φ = 340930944.

The previous prime is 561342161. The next prime is 561342181. The reversal of 561342171 is 171243165.

It is an interprime number because it is at equal distance from previous prime (561342161) and next prime (561342181).

It is not a de Polignac number, because 561342171 - 2⁵ = 561342139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (561342101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1442845 + ... + 1443233.

It is an arithmetic number, because the mean of its divisors is an integer number (25520040).

Almost surely, 2^561342171 is an apocalyptic number.

561342171 is a deficient number, since it is larger than the sum of its proper divisors (255299109).

561342171 is a wasteful number, since it uses less digits than its factorization.

561342171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795.

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

The square root of 561342171 is about 23692.6606990435. The cubic root of 561342171 is about 824.9150428585.

The spelling of 561342171 in words is "five hundred sixty-one million, three hundred forty-two thousand, one hundred seventy-one".