561199117 has 2 divisors, whose sum is σ = 561199118. Its totient is φ = 561199116.

The previous prime is 561199073. The next prime is 561199141. The reversal of 561199117 is 711991165.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 559511716 + 1687401 = 23654^2 + 1299^2 .

It is a cyclic number.

It is not a de Polignac number, because 561199117 - 2¹¹ = 561197069 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 561199117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561199147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280599558 + 280599559.

It is an arithmetic number, because the mean of its divisors is an integer number (280599559).

Almost surely, 2^561199117 is an apocalyptic number.

It is an amenable number.

561199117 is a deficient number, since it is larger than the sum of its proper divisors (1).

561199117 is an equidigital number, since it uses as much as digits as its factorization.

561199117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17010, while the sum is 40.

The square root of 561199117 is about 23689.6415549075. The cubic root of 561199117 is about 824.8449623571.

The spelling of 561199117 in words is "five hundred sixty-one million, one hundred ninety-nine thousand, one hundred seventeen".