557493263 has 2 divisors, whose sum is σ = 557493264. Its totient is φ = 557493262.

The previous prime is 557493259. The next prime is 557493289. The reversal of 557493263 is 362394755.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 557493263 - 2² = 557493259 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (557493203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278746631 + 278746632.

It is an arithmetic number, because the mean of its divisors is an integer number (278746632).

Almost surely, 2^557493263 is an apocalyptic number.

557493263 is a deficient number, since it is larger than the sum of its proper divisors (1).

557493263 is an equidigital number, since it uses as much as digits as its factorization.

557493263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 44.

The square root of 557493263 is about 23611.2952418964. The cubic root of 557493263 is about 823.0253419015.

The spelling of 557493263 in words is "five hundred fifty-seven million, four hundred ninety-three thousand, two hundred sixty-three".