557666023 has 2 divisors, whose sum is σ = 557666024. Its totient is φ = 557666022.

The previous prime is 557665993. The next prime is 557666059. The reversal of 557666023 is 320666755.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 557666023 - 2²⁵ = 524111591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (557666063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278833011 + 278833012.

It is an arithmetic number, because the mean of its divisors is an integer number (278833012).

Almost surely, 2^557666023 is an apocalyptic number.

557666023 is a deficient number, since it is larger than the sum of its proper divisors (1).

557666023 is an equidigital number, since it uses as much as digits as its factorization.

557666023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 226800, while the sum is 40.

The square root of 557666023 is about 23614.9533770448. The cubic root of 557666023 is about 823.1103481146.

The spelling of 557666023 in words is "five hundred fifty-seven million, six hundred sixty-six thousand, twenty-three".