561622219 has 2 divisors, whose sum is σ = 561622220. Its totient is φ = 561622218.

The previous prime is 561622213. The next prime is 561622253. The reversal of 561622219 is 912226165.

It is a happy number.

It is an a-pointer prime, because the next prime (561622253) can be obtained adding 561622219 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 561622219 - 2¹⁹ = 561097931 is a prime.

It is a super-2 number, since 2×561622219² = 630839033748967922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (561622213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280811109 + 280811110.

It is an arithmetic number, because the mean of its divisors is an integer number (280811110).

Almost surely, 2^561622219 is an apocalyptic number.

561622219 is a deficient number, since it is larger than the sum of its proper divisors (1).

561622219 is an equidigital number, since it uses as much as digits as its factorization.

561622219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 34.

The square root of 561622219 is about 23698.5699779544. The cubic root of 561622219 is about 825.0522006762.

The spelling of 561622219 in words is "five hundred sixty-one million, six hundred twenty-two thousand, two hundred nineteen".