561992219 has 2 divisors, whose sum is σ = 561992220. Its totient is φ = 561992218.

The previous prime is 561992209. The next prime is 561992251. The reversal of 561992219 is 912299165.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 561992219 - 2¹² = 561988123 is a prime.

It is a super-2 number, since 2×561992219² = 631670508433087922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 561992219.

It is not a weakly prime, because it can be changed into another prime (561992209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280996109 + 280996110.

It is an arithmetic number, because the mean of its divisors is an integer number (280996110).

Almost surely, 2^561992219 is an apocalyptic number.

561992219 is a deficient number, since it is larger than the sum of its proper divisors (1).

561992219 is an equidigital number, since it uses as much as digits as its factorization.

561992219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 87480, while the sum is 44.

The square root of 561992219 is about 23706.3750708538. The cubic root of 561992219 is about 825.2333439731.

The spelling of 561992219 in words is "five hundred sixty-one million, nine hundred ninety-two thousand, two hundred nineteen".