557195993 has 2 divisors, whose sum is σ = 557195994. Its totient is φ = 557195992.

The previous prime is 557195963. The next prime is 557196007. The reversal of 557195993 is 399591755.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 540655504 + 16540489 = 23252^2 + 4067^2 .

It is a cyclic number.

It is not a de Polignac number, because 557195993 - 2¹² = 557191897 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (557195923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278597996 + 278597997.

It is an arithmetic number, because the mean of its divisors is an integer number (278597997).

Almost surely, 2^557195993 is an apocalyptic number.

It is an amenable number.

557195993 is a deficient number, since it is larger than the sum of its proper divisors (1).

557195993 is an equidigital number, since it uses as much as digits as its factorization.

557195993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1913625, while the sum is 53.

The square root of 557195993 is about 23604.9993221775. Note that the first 3 decimals coincide. The cubic root of 557195993 is about 822.8790296743.

The spelling of 557195993 in words is "five hundred fifty-seven million, one hundred ninety-five thousand, nine hundred ninety-three".