557727257 has 2 divisors, whose sum is σ = 557727258. Its totient is φ = 557727256.

The previous prime is 557727221. The next prime is 557727277. The reversal of 557727257 is 752727755.

557727257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 481758601 + 75968656 = 21949^2 + 8716^2 .

It is a cyclic number.

It is not a de Polignac number, because 557727257 - 2⁶ = 557727193 is a prime.

It is a super-2 number, since 2×557727257² = 622119386401488098, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (557727277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278863628 + 278863629.

It is an arithmetic number, because the mean of its divisors is an integer number (278863629).

Almost surely, 2^557727257 is an apocalyptic number.

It is an amenable number.

557727257 is a deficient number, since it is larger than the sum of its proper divisors (1).

557727257 is an equidigital number, since it uses as much as digits as its factorization.

557727257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1200500, while the sum is 47.

The square root of 557727257 is about 23616.2498504737. The cubic root of 557727257 is about 823.1404739679.

It can be divided in two parts, 55772 and 7257, that multiplied together give a palindrome (404737404).

The spelling of 557727257 in words is "five hundred fifty-seven million, seven hundred twenty-seven thousand, two hundred fifty-seven".