257441383 has 2 divisors, whose sum is σ = 257441384. Its totient is φ = 257441382.

The previous prime is 257441357. The next prime is 257441477. The reversal of 257441383 is 383144752.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 257441383 - 2⁵ = 257441351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (257441683) 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, 128720691 + 128720692.

It is an arithmetic number, because the mean of its divisors is an integer number (128720692).

Almost surely, 2^257441383 is an apocalyptic number.

257441383 is a deficient number, since it is larger than the sum of its proper divisors (1).

257441383 is an equidigital number, since it uses as much as digits as its factorization.

257441383 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 37.

The square root of 257441383 is about 16044.9799937551. The cubic root of 257441383 is about 636.1498853983.

The spelling of 257441383 in words is "two hundred fifty-seven million, four hundred forty-one thousand, three hundred eighty-three".