566511161 has 2 divisors, whose sum is σ = 566511162. Its totient is φ = 566511160.

The previous prime is 566511151. The next prime is 566511167. The reversal of 566511161 is 161115665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 566202025 + 309136 = 23795^2 + 556^2 .

It is a cyclic number.

It is not a de Polignac number, because 566511161 - 2²⁶ = 499402297 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (566511167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 283255580 + 283255581.

It is an arithmetic number, because the mean of its divisors is an integer number (283255581).

Almost surely, 2^566511161 is an apocalyptic number.

It is an amenable number.

566511161 is a deficient number, since it is larger than the sum of its proper divisors (1).

566511161 is an equidigital number, since it uses as much as digits as its factorization.

566511161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5400, while the sum is 32.

The square root of 566511161 is about 23801.4949320416. The cubic root of 566511161 is about 827.4393239009.

The spelling of 566511161 in words is "five hundred sixty-six million, five hundred eleven thousand, one hundred sixty-one".