257543313 has 8 divisors (see below), whose sum is σ = 343536000. Its totient is φ = 171623088.

The previous prime is 257543291. The next prime is 257543323. The reversal of 257543313 is 313345752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 257543313 - 2¹³ = 257535121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (257543323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9193 + ... + 24486.

It is an arithmetic number, because the mean of its divisors is an integer number (42942000).

Almost surely, 2^257543313 is an apocalyptic number.

It is an amenable number.

257543313 is a deficient number, since it is larger than the sum of its proper divisors (85992687).

257543313 is a wasteful number, since it uses less digits than its factorization.

257543313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36231.

The product of its digits is 37800, while the sum is 33.

The square root of 257543313 is about 16048.1560623020. The cubic root of 257543313 is about 636.2338322773.

The spelling of 257543313 in words is "two hundred fifty-seven million, five hundred forty-three thousand, three hundred thirteen".