561475307 has 2 divisors, whose sum is σ = 561475308. Its totient is φ = 561475306.

The previous prime is 561475283. The next prime is 561475309. The reversal of 561475307 is 703574165.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 561475307 - 2⁸ = 561475051 is a prime.

Together with 561475309, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (561475309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280737653 + 280737654.

It is an arithmetic number, because the mean of its divisors is an integer number (280737654).

Almost surely, 2^561475307 is an apocalyptic number.

561475307 is a deficient number, since it is larger than the sum of its proper divisors (1).

561475307 is an equidigital number, since it uses as much as digits as its factorization.

561475307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 88200, while the sum is 38.

The square root of 561475307 is about 23695.4701789182. The cubic root of 561475307 is about 824.9802539504.

The spelling of 561475307 in words is "five hundred sixty-one million, four hundred seventy-five thousand, three hundred seven".