255638814 has 8 divisors (see below), whose sum is σ = 511277640. Its totient is φ = 85212936.

The previous prime is 255638807. The next prime is 255638819. The reversal of 255638814 is 418836552.

255638814 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

255638814 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255638819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21303229 + ... + 21303240.

It is an arithmetic number, because the mean of its divisors is an integer number (63909705).

Almost surely, 2^255638814 is an apocalyptic number.

255638814 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

255638814 is a wasteful number, since it uses less digits than its factorization.

255638814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42606474.

The product of its digits is 230400, while the sum is 42.

The square root of 255638814 is about 15988.7089535084. The cubic root of 255638814 is about 634.6616619905.

The spelling of 255638814 in words is "two hundred fifty-five million, six hundred thirty-eight thousand, eight hundred fourteen".