255331243 has 4 divisors (see below), whose sum is σ = 255366720. Its totient is φ = 255295768.

The previous prime is 255331229. The next prime is 255331261. The reversal of 255331243 is 342133552.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 255331243 - 2¹⁷ = 255200171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255331273) 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, 2683 + ... + 22756.

It is an arithmetic number, because the mean of its divisors is an integer number (63841680).

Almost surely, 2^255331243 is an apocalyptic number.

255331243 is a deficient number, since it is larger than the sum of its proper divisors (35477).

255331243 is a wasteful number, since it uses less digits than its factorization.

255331243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35476.

The product of its digits is 10800, while the sum is 28.

The square root of 255331243 is about 15979.0876773363. The cubic root of 255331243 is about 634.4070294780.

Adding to 255331243 its reverse (342133552), we get a palindrome (597464795).

The spelling of 255331243 in words is "two hundred fifty-five million, three hundred thirty-one thousand, two hundred forty-three".