557635457 has 2 divisors, whose sum is σ = 557635458. Its totient is φ = 557635456.

The previous prime is 557635453. The next prime is 557635487. The reversal of 557635457 is 754536755.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 312900721 + 244734736 = 17689^2 + 15644^2 .

It is a cyclic number.

It is not a de Polignac number, because 557635457 - 2² = 557635453 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (557635453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278817728 + 278817729.

It is an arithmetic number, because the mean of its divisors is an integer number (278817729).

Almost surely, 2^557635457 is an apocalyptic number.

It is an amenable number.

557635457 is a deficient number, since it is larger than the sum of its proper divisors (1).

557635457 is an equidigital number, since it uses as much as digits as its factorization.

557635457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2205000, while the sum is 47.

The square root of 557635457 is about 23614.3061934921. The cubic root of 557635457 is about 823.0953094538.

The spelling of 557635457 in words is "five hundred fifty-seven million, six hundred thirty-five thousand, four hundred fifty-seven".