557637793 has 2 divisors, whose sum is σ = 557637794. Its totient is φ = 557637792.

The previous prime is 557637749. The next prime is 557637797. The reversal of 557637793 is 397736755.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 511302544 + 46335249 = 22612^2 + 6807^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-557637793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 557637793.

It is not a weakly prime, because it can be changed into another prime (557637797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278818896 + 278818897.

It is an arithmetic number, because the mean of its divisors is an integer number (278818897).

Almost surely, 2^557637793 is an apocalyptic number.

It is an amenable number.

557637793 is a deficient number, since it is larger than the sum of its proper divisors (1).

557637793 is an equidigital number, since it uses as much as digits as its factorization.

557637793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4167450, while the sum is 52.

The square root of 557637793 is about 23614.3556549824. The cubic root of 557637793 is about 823.0964587996.

The spelling of 557637793 in words is "five hundred fifty-seven million, six hundred thirty-seven thousand, seven hundred ninety-three".