557142857 has 2 divisors, whose sum is σ = 557142858. Its totient is φ = 557142856.

The previous prime is 557142851. The next prime is 557142863. The reversal of 557142857 is 758241755.

It is a balanced prime because it is at equal distance from previous prime (557142851) and next prime (557142863).

It can be written as a sum of positive squares in only one way, i.e., 546671161 + 10471696 = 23381^2 + 3236^2 .

It is a cyclic number.

It is not a de Polignac number, because 557142857 - 2⁸ = 557142601 is a prime.

It is a super-2 number, since 2×557142857² = 620816326212244898, which contains 22 as substring.

557142857 is a modest number, since divided by 142857 gives 557 as remainder.

It is not a weakly prime, because it can be changed into another prime (557142851) 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, 278571428 + 278571429.

It is an arithmetic number, because the mean of its divisors is an integer number (278571429).

Almost surely, 2^557142857 is an apocalyptic number.

It is an amenable number.

557142857 is a deficient number, since it is larger than the sum of its proper divisors (1).

557142857 is an equidigital number, since it uses as much as digits as its factorization.

557142857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 392000, while the sum is 44.

The square root of 557142857 is about 23603.8737710572. The cubic root of 557142857 is about 822.8528713802.

The spelling of 557142857 in words is "five hundred fifty-seven million, one hundred forty-two thousand, eight hundred fifty-seven".