255715893 has 16 divisors (see below), whose sum is σ = 388080000. Its totient is φ = 166318560.

The previous prime is 255715879. The next prime is 255715903. The reversal of 255715893 is 398517552.

255715893 is a `hidden beast` number, since 2 + 557 + 1 + 5 + 8 + 93 = 666.

It is not a de Polignac number, because 255715893 - 2⁴ = 255715877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255715093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114393 + ... + 116606.

It is an arithmetic number, because the mean of its divisors is an integer number (24255000).

Almost surely, 2^255715893 is an apocalyptic number.

It is an amenable number.

255715893 is a deficient number, since it is larger than the sum of its proper divisors (132364107).

255715893 is a wasteful number, since it uses less digits than its factorization.

255715893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231049 (or 231043 counting only the distinct ones).

The product of its digits is 378000, while the sum is 45.

The square root of 255715893 is about 15991.1191916013. The cubic root of 255715893 is about 634.7254423032.

The spelling of 255715893 in words is "two hundred fifty-five million, seven hundred fifteen thousand, eight hundred ninety-three".