557163161 has 2 divisors, whose sum is σ = 557163162. Its totient is φ = 557163160.

The previous prime is 557163149. The next prime is 557163179. The reversal of 557163161 is 161361755.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 480705625 + 76457536 = 21925^2 + 8744^2 .

It is a cyclic number.

It is not a de Polignac number, because 557163161 - 2¹⁸ = 556901017 is a prime.

It is not a weakly prime, because it can be changed into another prime (557163121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278581580 + 278581581.

It is an arithmetic number, because the mean of its divisors is an integer number (278581581).

Almost surely, 2^557163161 is an apocalyptic number.

It is an amenable number.

557163161 is a deficient number, since it is larger than the sum of its proper divisors (1).

557163161 is an equidigital number, since it uses as much as digits as its factorization.

557163161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18900, while the sum is 35.

The square root of 557163161 is about 23604.3038660326. The cubic root of 557163161 is about 822.8628670222.

The spelling of 557163161 in words is "five hundred fifty-seven million, one hundred sixty-three thousand, one hundred sixty-one".