561077567 has 2 divisors, whose sum is σ = 561077568. Its totient is φ = 561077566.

The previous prime is 561077563. The next prime is 561077591. The reversal of 561077567 is 765770165.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 561077567 - 2² = 561077563 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561077563) 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, 280538783 + 280538784.

It is an arithmetic number, because the mean of its divisors is an integer number (280538784).

Almost surely, 2^561077567 is an apocalyptic number.

561077567 is a deficient number, since it is larger than the sum of its proper divisors (1).

561077567 is an equidigital number, since it uses as much as digits as its factorization.

561077567 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 308700, while the sum is 44.

The square root of 561077567 is about 23687.0759487109. The cubic root of 561077567 is about 824.7854070576.

The spelling of 561077567 in words is "five hundred sixty-one million, seventy-seven thousand, five hundred sixty-seven".