556457376257 has 2 divisors, whose sum is σ = 556457376258. Its totient is φ = 556457376256.

The previous prime is 556457376253. The next prime is 556457376271. The reversal of 556457376257 is 752673754655.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 289453684081 + 267003692176 = 538009^2 + 516724^2 .

It is a cyclic number.

It is not a de Polignac number, because 556457376257 - 2² = 556457376253 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 556457376257.

It is not a weakly prime, because it can be changed into another prime (556457376253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278228688128 + 278228688129.

It is an arithmetic number, because the mean of its divisors is an integer number (278228688129).

Almost surely, 2^556457376257 is an apocalyptic number.

It is an amenable number.

556457376257 is a deficient number, since it is larger than the sum of its proper divisors (1).

556457376257 is an equidigital number, since it uses as much as digits as its factorization.

556457376257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 185220000, while the sum is 62.

The spelling of 556457376257 in words is "five hundred fifty-six billion, four hundred fifty-seven million, three hundred seventy-six thousand, two hundred fifty-seven".