557276257 has 2 divisors, whose sum is σ = 557276258. Its totient is φ = 557276256.

The previous prime is 557276171. The next prime is 557276323. The reversal of 557276257 is 752672755.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 535968801 + 21307456 = 23151^2 + 4616^2 .

It is a cyclic number.

It is not a de Polignac number, because 557276257 - 2¹¹ = 557274209 is a prime.

It is not a weakly prime, because it can be changed into another prime (557276957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278638128 + 278638129.

It is an arithmetic number, because the mean of its divisors is an integer number (278638129).

Almost surely, 2^557276257 is an apocalyptic number.

It is an amenable number.

557276257 is a deficient number, since it is larger than the sum of its proper divisors (1).

557276257 is an equidigital number, since it uses as much as digits as its factorization.

557276257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1029000, while the sum is 46.

The square root of 557276257 is about 23606.6994092779. The cubic root of 557276257 is about 822.9185396446.

The spelling of 557276257 in words is "five hundred fifty-seven million, two hundred seventy-six thousand, two hundred fifty-seven".