557894497 has 2 divisors, whose sum is σ = 557894498. Its totient is φ = 557894496.

The previous prime is 557894479. The next prime is 557894527. The reversal of 557894497 is 794498755.

Together with previous prime (557894479) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 314565696 + 243328801 = 17736^2 + 15599^2 .

It is a cyclic number.

It is not a de Polignac number, because 557894497 - 2⁷ = 557894369 is a prime.

It is a super-2 number, since 2×557894497² = 622492539565766018, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (557894297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278947248 + 278947249.

It is an arithmetic number, because the mean of its divisors is an integer number (278947249).

Almost surely, 2^557894497 is an apocalyptic number.

It is an amenable number.

557894497 is a deficient number, since it is larger than the sum of its proper divisors (1).

557894497 is an equidigital number, since it uses as much as digits as its factorization.

557894497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12700800, while the sum is 58.

The square root of 557894497 is about 23619.7903674017. The cubic root of 557894497 is about 823.2227413329. Note that the first 3 decimals are identical.

The spelling of 557894497 in words is "five hundred fifty-seven million, eight hundred ninety-four thousand, four hundred ninety-seven".