557381239 has 2 divisors, whose sum is σ = 557381240. Its totient is φ = 557381238.

The previous prime is 557381233. The next prime is 557381249. The reversal of 557381239 is 932183755.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 557381239 - 2⁹ = 557380727 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 557381195 and 557381204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (557381233) 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, 278690619 + 278690620.

It is an arithmetic number, because the mean of its divisors is an integer number (278690620).

Almost surely, 2^557381239 is an apocalyptic number.

557381239 is a deficient number, since it is larger than the sum of its proper divisors (1).

557381239 is an equidigital number, since it uses as much as digits as its factorization.

557381239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 226800, while the sum is 43.

The square root of 557381239 is about 23608.9228682716. The cubic root of 557381239 is about 822.9702113297.

The spelling of 557381239 in words is "five hundred fifty-seven million, three hundred eighty-one thousand, two hundred thirty-nine".