257083459 has 4 divisors (see below), whose sum is σ = 260337760. Its totient is φ = 253829160.

The previous prime is 257083451. The next prime is 257083493. The reversal of 257083459 is 954380752.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 257083459 - 2³ = 257083451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (257083451) 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 in 3 ways as a sum of consecutive naturals, for example, 1627032 + ... + 1627189.

It is an arithmetic number, because the mean of its divisors is an integer number (65084440).

Almost surely, 2^257083459 is an apocalyptic number.

257083459 is a deficient number, since it is larger than the sum of its proper divisors (3254301).

257083459 is an equidigital number, since it uses as much as digits as its factorization.

257083459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3254300.

The product of its (nonzero) digits is 302400, while the sum is 43.

The square root of 257083459 is about 16033.8223452800. The cubic root of 257083459 is about 635.8549329291.

The spelling of 257083459 in words is "two hundred fifty-seven million, eighty-three thousand, four hundred fifty-nine".