255395634 has 64 divisors (see below), whose sum is σ = 593913600. Its totient is φ = 72559872.

The previous prime is 255395633. The next prime is 255395659. The reversal of 255395634 is 436593552.

It is a happy number.

255395634 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (255395633) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49572 + ... + 54480.

It is an arithmetic number, because the mean of its divisors is an integer number (9279900).

Almost surely, 2^255395634 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255395634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296956800).

255395634 is an abundant number, since it is smaller than the sum of its proper divisors (338517966).

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

255395634 is a wasteful number, since it uses less digits than its factorization.

255395634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4979.

The product of its digits is 486000, while the sum is 42.

The square root of 255395634 is about 15981.1024025253. The cubic root of 255395634 is about 634.4603545484.

The spelling of 255395634 in words is "two hundred fifty-five million, three hundred ninety-five thousand, six hundred thirty-four".