255891312 has 100 divisors (see below), whose sum is σ = 756561696. Its totient is φ = 83462400.

The previous prime is 255891301. The next prime is 255891341. The reversal of 255891312 is 213198552.

255891312 is a `hidden beast` number, since 2 + 558 + 91 + 3 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 58812 + ... + 63012.

Almost surely, 2^255891312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255891312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (378280848).

255891312 is an abundant number, since it is smaller than the sum of its proper divisors (500670384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255891312 is a wasteful number, since it uses less digits than its factorization.

255891312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4268 (or 4253 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 255891312 is about 15996.6031394168. The cubic root of 255891312 is about 634.8705479393.

The spelling of 255891312 in words is "two hundred fifty-five million, eight hundred ninety-one thousand, three hundred twelve".