557555897 has 4 divisors (see below), whose sum is σ = 563820660. Its totient is φ = 551291136.

The previous prime is 557555879. The next prime is 557555909. The reversal of 557555897 is 798555755.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 798555755 = 5 ⋅159711151.

It can be written as a sum of positive squares in 2 ways, for example, as 343694521 + 213861376 = 18539^2 + 14624^2 .

It is a cyclic number.

It is not a de Polignac number, because 557555897 - 2⁶ = 557555833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (557555497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3132248 + ... + 3132425.

It is an arithmetic number, because the mean of its divisors is an integer number (140955165).

Almost surely, 2^557555897 is an apocalyptic number.

It is an amenable number.

557555897 is a deficient number, since it is larger than the sum of its proper divisors (6264763).

557555897 is an equidigital number, since it uses as much as digits as its factorization.

557555897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6264762.

The product of its digits is 11025000, while the sum is 56.

The square root of 557555897 is about 23612.6215613599. The cubic root of 557555897 is about 823.0561628652.

The spelling of 557555897 in words is "five hundred fifty-seven million, five hundred fifty-five thousand, eight hundred ninety-seven".