257434283 has 2 divisors, whose sum is σ = 257434284. Its totient is φ = 257434282.

The previous prime is 257434279. The next prime is 257434297. The reversal of 257434283 is 382434752.

257434283 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 257434283 - 2² = 257434279 is a prime.

It is not a weakly prime, because it can be changed into another prime (257434223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128717141 + 128717142.

It is an arithmetic number, because the mean of its divisors is an integer number (128717142).

Almost surely, 2^257434283 is an apocalyptic number.

257434283 is a deficient number, since it is larger than the sum of its proper divisors (1).

257434283 is an equidigital number, since it uses as much as digits as its factorization.

257434283 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 38.

The square root of 257434283 is about 16044.7587392270. The cubic root of 257434283 is about 636.1440371988.

The spelling of 257434283 in words is "two hundred fifty-seven million, four hundred thirty-four thousand, two hundred eighty-three".