255280397 has 2 divisors, whose sum is σ = 255280398. Its totient is φ = 255280396.

The previous prime is 255280393. The next prime is 255280411. The reversal of 255280397 is 793082552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 178997641 + 76282756 = 13379^2 + 8734^2 .

It is a cyclic number.

It is not a de Polignac number, because 255280397 - 2² = 255280393 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255280393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127640198 + 127640199.

It is an arithmetic number, because the mean of its divisors is an integer number (127640199).

Almost surely, 2^255280397 is an apocalyptic number.

It is an amenable number.

255280397 is a deficient number, since it is larger than the sum of its proper divisors (1).

255280397 is an equidigital number, since it uses as much as digits as its factorization.

255280397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 255280397 is about 15977.4965811293. The cubic root of 255280397 is about 634.3649152934.

The spelling of 255280397 in words is "two hundred fifty-five million, two hundred eighty thousand, three hundred ninety-seven".