255302317 has 2 divisors, whose sum is σ = 255302318. Its totient is φ = 255302316.

The previous prime is 255302303. The next prime is 255302339. The reversal of 255302317 is 713203552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 251095716 + 4206601 = 15846^2 + 2051^2 .

It is a cyclic number.

It is not a de Polignac number, because 255302317 - 2⁷ = 255302189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255302357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127651158 + 127651159.

It is an arithmetic number, because the mean of its divisors is an integer number (127651159).

Almost surely, 2^255302317 is an apocalyptic number.

It is an amenable number.

255302317 is a deficient number, since it is larger than the sum of its proper divisors (1).

255302317 is an equidigital number, since it uses as much as digits as its factorization.

255302317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 255302317 is about 15978.1825311892. The cubic root of 255302317 is about 634.3830716438.

Adding to 255302317 its reverse (713203552), we get a palindrome (968505869).

The spelling of 255302317 in words is "two hundred fifty-five million, three hundred two thousand, three hundred seventeen".