557606857 has 2 divisors, whose sum is σ = 557606858. Its totient is φ = 557606856.

The previous prime is 557606849. The next prime is 557606869. The reversal of 557606857 is 758606755.

557606857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 495685696 + 61921161 = 22264^2 + 7869^2 .

It is a cyclic number.

It is not a de Polignac number, because 557606857 - 2³ = 557606849 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 557606857.

It is not a weakly prime, because it can be changed into another prime (557606887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278803428 + 278803429.

It is an arithmetic number, because the mean of its divisors is an integer number (278803429).

Almost surely, 2^557606857 is an apocalyptic number.

It is an amenable number.

557606857 is a deficient number, since it is larger than the sum of its proper divisors (1).

557606857 is an equidigital number, since it uses as much as digits as its factorization.

557606857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1764000, while the sum is 49.

The square root of 557606857 is about 23613.7006206143. The cubic root of 557606857 is about 823.0812375794.

The spelling of 557606857 in words is "five hundred fifty-seven million, six hundred six thousand, eight hundred fifty-seven".