255244321 has 2 divisors, whose sum is σ = 255244322. Its totient is φ = 255244320.

The previous prime is 255244267. The next prime is 255244337. The reversal of 255244321 is 123442552.

255244321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 253956096 + 1288225 = 15936^2 + 1135^2 .

It is a cyclic number.

It is not a de Polignac number, because 255244321 - 2⁹ = 255243809 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 255244321.

It is not a weakly prime, because it can be changed into another prime (255244351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127622160 + 127622161.

It is an arithmetic number, because the mean of its divisors is an integer number (127622161).

Almost surely, 2^255244321 is an apocalyptic number.

It is an amenable number.

255244321 is a deficient number, since it is larger than the sum of its proper divisors (1).

255244321 is an equidigital number, since it uses as much as digits as its factorization.

255244321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9600, while the sum is 28.

The square root of 255244321 is about 15976.3675783953. The cubic root of 255244321 is about 634.3350312560.

Adding to 255244321 its reverse (123442552), we get a palindrome (378686873).

The spelling of 255244321 in words is "two hundred fifty-five million, two hundred forty-four thousand, three hundred twenty-one".