556898857 has 2 divisors, whose sum is σ = 556898858. Its totient is φ = 556898856.

The previous prime is 556898851. The next prime is 556898863. The reversal of 556898857 is 758898655.

It is a balanced prime because it is at equal distance from previous prime (556898851) and next prime (556898863).

It can be written as a sum of positive squares in only one way, i.e., 528126361 + 28772496 = 22981^2 + 5364^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-556898857 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 556898795 and 556898804.

It is not a weakly prime, because it can be changed into another prime (556898851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278449428 + 278449429.

It is an arithmetic number, because the mean of its divisors is an integer number (278449429).

Almost surely, 2^556898857 is an apocalyptic number.

It is an amenable number.

556898857 is a deficient number, since it is larger than the sum of its proper divisors (1).

556898857 is an equidigital number, since it uses as much as digits as its factorization.

556898857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192000, while the sum is 61.

The square root of 556898857 is about 23598.7045619034. The cubic root of 556898857 is about 822.7327313867.

It can be divided in two parts, 556898 and 857, that added together give a palindrome (557755).

The spelling of 556898857 in words is "five hundred fifty-six million, eight hundred ninety-eight thousand, eight hundred fifty-seven".