557423189 has 2 divisors, whose sum is σ = 557423190. Its totient is φ = 557423188.

The previous prime is 557423177. The next prime is 557423227. The reversal of 557423189 is 981324755.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 556488100 + 935089 = 23590^2 + 967^2 .

It is a cyclic number.

It is not a de Polignac number, because 557423189 - 2¹⁶ = 557357653 is a prime.

It is a super-2 number, since 2×557423189² = 621441223269859442, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (557423089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278711594 + 278711595.

It is an arithmetic number, because the mean of its divisors is an integer number (278711595).

Almost surely, 2^557423189 is an apocalyptic number.

It is an amenable number.

557423189 is a deficient number, since it is larger than the sum of its proper divisors (1).

557423189 is an equidigital number, since it uses as much as digits as its factorization.

557423189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 302400, while the sum is 44.

The square root of 557423189 is about 23609.8112868358. The cubic root of 557423189 is about 822.9908571234.

The spelling of 557423189 in words is "five hundred fifty-seven million, four hundred twenty-three thousand, one hundred eighty-nine".