255217304 has 32 divisors (see below), whose sum is σ = 485511840. Its totient is φ = 125760000.

The previous prime is 255217289. The next prime is 255217309. The reversal of 255217304 is 403712552.

It is a happy number.

It is a super-2 number, since 2×255217304² = 130271744522056832, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255217309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211904 + ... + 213104.

It is an arithmetic number, because the mean of its divisors is an integer number (15172245).

Almost surely, 2^255217304 is an apocalyptic number.

It is an amenable number.

255217304 is a deficient number, since it is larger than the sum of its proper divisors (230294536).

255217304 is a wasteful number, since it uses less digits than its factorization.

255217304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1571 (or 1567 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 255217304 is about 15975.5220258995. The cubic root of 255217304 is about 634.3126495184.

Adding to 255217304 its reverse (403712552), we get a palindrome (658929856).

The spelling of 255217304 in words is "two hundred fifty-five million, two hundred seventeen thousand, three hundred four".