557257689 has 6 divisors (see below), whose sum is σ = 804927786. Its totient is φ = 371505120.

The previous prime is 557257681. The next prime is 557257699. The reversal of 557257689 is 986752755.

557257689 is a `hidden beast` number, since 5 + 572 + 5 + 7 + 68 + 9 = 666.

557257689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 519840000 + 37417689 = 22800^2 + 6117^2 .

It is not a de Polignac number, because 557257689 - 2³ = 557257681 is a prime.

It is a super-2 number, since 2×557257689² = 621072263899241442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (557257681) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30958752 + ... + 30958769.

It is an arithmetic number, because the mean of its divisors is an integer number (134154631).

Almost surely, 2^557257689 is an apocalyptic number.

It is an amenable number.

557257689 is a deficient number, since it is larger than the sum of its proper divisors (247670097).

557257689 is a wasteful number, since it uses less digits than its factorization.

557257689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61917527 (or 61917524 counting only the distinct ones).

The product of its digits is 5292000, while the sum is 54.

The square root of 557257689 is about 23606.3061278125. The cubic root of 557257689 is about 822.9093998801.

The spelling of 557257689 in words is "five hundred fifty-seven million, two hundred fifty-seven thousand, six hundred eighty-nine".