561722527 has 2 divisors, whose sum is σ = 561722528. Its totient is φ = 561722526.

The previous prime is 561722519. The next prime is 561722531. The reversal of 561722527 is 725227165.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 561722527 - 2³ = 561722519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561722827) 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 as a sum of consecutive naturals, namely, 280861263 + 280861264.

It is an arithmetic number, because the mean of its divisors is an integer number (280861264).

Almost surely, 2^561722527 is an apocalyptic number.

561722527 is a deficient number, since it is larger than the sum of its proper divisors (1).

561722527 is an equidigital number, since it uses as much as digits as its factorization.

561722527 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58800, while the sum is 37.

The square root of 561722527 is about 23700.6862136943. The cubic root of 561722527 is about 825.1013169723.

The spelling of 561722527 in words is "five hundred sixty-one million, seven hundred twenty-two thousand, five hundred twenty-seven".