257476741 has 2 divisors, whose sum is σ = 257476742. Its totient is φ = 257476740.

The previous prime is 257476727. The next prime is 257476753. The reversal of 257476741 is 147674752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 220522500 + 36954241 = 14850^2 + 6079^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-257476741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (257476711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128738370 + 128738371.

It is an arithmetic number, because the mean of its divisors is an integer number (128738371).

Almost surely, 2^257476741 is an apocalyptic number.

It is an amenable number.

257476741 is a deficient number, since it is larger than the sum of its proper divisors (1).

257476741 is an equidigital number, since it uses as much as digits as its factorization.

257476741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 329280, while the sum is 43.

The square root of 257476741 is about 16046.0817958778. The cubic root of 257476741 is about 636.1790078309.

The spelling of 257476741 in words is "two hundred fifty-seven million, four hundred seventy-six thousand, seven hundred forty-one".