557570491 has 2 divisors, whose sum is σ = 557570492. Its totient is φ = 557570490.

The previous prime is 557570459. The next prime is 557570527. The reversal of 557570491 is 194075755.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 557570491 - 2⁵ = 557570459 is a prime.

It is not a weakly prime, because it can be changed into another prime (557510491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278785245 + 278785246.

It is an arithmetic number, because the mean of its divisors is an integer number (278785246).

Almost surely, 2^557570491 is an apocalyptic number.

557570491 is a deficient number, since it is larger than the sum of its proper divisors (1).

557570491 is an equidigital number, since it uses as much as digits as its factorization.

557570491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 220500, while the sum is 43.

The square root of 557570491 is about 23612.9305889803. The cubic root of 557570491 is about 823.0633439550.

The spelling of 557570491 in words is "five hundred fifty-seven million, five hundred seventy thousand, four hundred ninety-one".