561195769 has 2 divisors, whose sum is σ = 561195770. Its totient is φ = 561195768.

The previous prime is 561195763. The next prime is 561195781. The reversal of 561195769 is 967591165.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 505125625 + 56070144 = 22475^2 + 7488^2 .

It is a cyclic number.

It is not a de Polignac number, because 561195769 - 2²⁵ = 527641337 is a prime.

It is a super-2 number, since 2×561195769² = 629881382287002722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (561195763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280597884 + 280597885.

It is an arithmetic number, because the mean of its divisors is an integer number (280597885).

Almost surely, 2^561195769 is an apocalyptic number.

It is an amenable number.

561195769 is a deficient number, since it is larger than the sum of its proper divisors (1).

561195769 is an equidigital number, since it uses as much as digits as its factorization.

561195769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 510300, while the sum is 49.

The square root of 561195769 is about 23689.5708910060. The cubic root of 561195769 is about 824.8433220680.

The spelling of 561195769 in words is "five hundred sixty-one million, one hundred ninety-five thousand, seven hundred sixty-nine".