557287897 has 8 divisors (see below), whose sum is σ = 595485000. Its totient is φ = 519692544.

The previous prime is 557287891. The next prime is 557287901. The reversal of 557287897 is 798782755.

557287897 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 4 ways, for example, as 58614336 + 498673561 = 7656^2 + 22331^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 557287897 - 2³ = 557287889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (557287891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148522 + ... + 152227.

It is an arithmetic number, because the mean of its divisors is an integer number (74435625).

Almost surely, 2^557287897 is an apocalyptic number.

It is an amenable number.

557287897 is a deficient number, since it is larger than the sum of its proper divisors (38197103).

557287897 is a wasteful number, since it uses less digits than its factorization.

557287897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300875.

The product of its digits is 9878400, while the sum is 58.

The square root of 557287897 is about 23606.9459481738. The cubic root of 557287897 is about 822.9242691220.

The spelling of 557287897 in words is "five hundred fifty-seven million, two hundred eighty-seven thousand, eight hundred ninety-seven".