257423337 has 24 divisors (see below), whose sum is σ = 389323584. Its totient is φ = 163594464.

The previous prime is 257423329. The next prime is 257423347. The reversal of 257423337 is 733324752.

It is not a de Polignac number, because 257423337 - 2³ = 257423329 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (257423347) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63658 + ... + 67580.

It is an arithmetic number, because the mean of its divisors is an integer number (16221816).

Almost surely, 2^257423337 is an apocalyptic number.

It is an amenable number.

257423337 is a deficient number, since it is larger than the sum of its proper divisors (131900247).

257423337 is a wasteful number, since it uses less digits than its factorization.

257423337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4269 (or 4266 counting only the distinct ones).

The product of its digits is 105840, while the sum is 36.

The square root of 257423337 is about 16044.4176273245. The cubic root of 257423337 is about 636.1350208766.

The spelling of 257423337 in words is "two hundred fifty-seven million, four hundred twenty-three thousand, three hundred thirty-seven".