257924093 has 12 divisors (see below), whose sum is σ = 313080480. Its totient is φ = 211464792.

The previous prime is 257924089. The next prime is 257924101. The reversal of 257924093 is 390429752.

It is not a de Polignac number, because 257924093 - 2² = 257924089 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 257924093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257924053) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113303 + ... + 115556.

It is an arithmetic number, because the mean of its divisors is an integer number (26090040).

Almost surely, 2^257924093 is an apocalyptic number.

257924093 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

257924093 is a deficient number, since it is larger than the sum of its proper divisors (55156387).

257924093 is a wasteful number, since it uses less digits than its factorization.

257924093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228896 (or 228889 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 257924093 is about 16060.0153486851. The cubic root of 257924093 is about 636.5472369324.

The spelling of 257924093 in words is "two hundred fifty-seven million, nine hundred twenty-four thousand, ninety-three".