558618161 has 2 divisors, whose sum is σ = 558618162. Its totient is φ = 558618160.

The previous prime is 558618157. The next prime is 558618163. The reversal of 558618161 is 161816855.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 402243136 + 156375025 = 20056^2 + 12505^2 .

It is a cyclic number.

It is not a de Polignac number, because 558618161 - 2² = 558618157 is a prime.

Together with 558618163, 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 (558618163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 279309080 + 279309081.

It is an arithmetic number, because the mean of its divisors is an integer number (279309081).

Almost surely, 2^558618161 is an apocalyptic number.

It is an amenable number.

558618161 is a deficient number, since it is larger than the sum of its proper divisors (1).

558618161 is an equidigital number, since it uses as much as digits as its factorization.

558618161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 57600, while the sum is 41.

The square root of 558618161 is about 23635.1044211783. The cubic root of 558618161 is about 823.5785309831.

The spelling of 558618161 in words is "five hundred fifty-eight million, six hundred eighteen thousand, one hundred sixty-one".