557255999 has 2 divisors, whose sum is σ = 557256000. Its totient is φ = 557255998.

The previous prime is 557255989. The next prime is 557256023. The reversal of 557255999 is 999552755.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-557255999 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (557255989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278627999 + 278628000.

It is an arithmetic number, because the mean of its divisors is an integer number (278628000).

Almost surely, 2^557255999 is an apocalyptic number.

557255999 is a deficient number, since it is larger than the sum of its proper divisors (1).

557255999 is an equidigital number, since it uses as much as digits as its factorization.

557255999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6378750, while the sum is 56.

The square root of 557255999 is about 23606.2703322655. The cubic root of 557255999 is about 822.9085679979.

The spelling of 557255999 in words is "five hundred fifty-seven million, two hundred fifty-five thousand, nine hundred ninety-nine".