561172285 has 16 divisors (see below), whose sum is σ = 712592640. Its totient is φ = 423364480.

The previous prime is 561172259. The next prime is 561172291. The reversal of 561172285 is 582271165.

It is not a de Polignac number, because 561172285 - 2¹⁷ = 561041213 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 26200 + ... + 42529.

It is an arithmetic number, because the mean of its divisors is an integer number (44537040).

Almost surely, 2^561172285 is an apocalyptic number.

It is an amenable number.

561172285 is a deficient number, since it is larger than the sum of its proper divisors (151420355).

561172285 is a wasteful number, since it uses less digits than its factorization.

561172285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68828.

The product of its digits is 33600, while the sum is 37.

The square root of 561172285 is about 23689.0752246684. The cubic root of 561172285 is about 824.8318163441.

The spelling of 561172285 in words is "five hundred sixty-one million, one hundred seventy-two thousand, two hundred eighty-five".