255217244 has 12 divisors (see below), whose sum is σ = 454200600. Its totient is φ = 125445648.

The previous prime is 255217241. The next prime is 255217283. The reversal of 255217244 is 442712552.

255217244 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 255217244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255217241) 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, 540479 + ... + 540950.

It is an arithmetic number, because the mean of its divisors is an integer number (37850050).

Almost surely, 2^255217244 is an apocalyptic number.

It is an amenable number.

255217244 is a deficient number, since it is larger than the sum of its proper divisors (198983356).

255217244 is a wasteful number, since it uses less digits than its factorization.

255217244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081492 (or 1081490 counting only the distinct ones).

The product of its digits is 22400, while the sum is 32.

The square root of 255217244 is about 15975.5201480265. The cubic root of 255217244 is about 634.3125998108.

Adding to 255217244 its reverse (442712552), we get a palindrome (697929796).

The spelling of 255217244 in words is "two hundred fifty-five million, two hundred seventeen thousand, two hundred forty-four".