255935497 has 2 divisors, whose sum is σ = 255935498. Its totient is φ = 255935496.

The previous prime is 255935479. The next prime is 255935501. The reversal of 255935497 is 794539552.

Together with previous prime (255935479) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 242238096 + 13697401 = 15564^2 + 3701^2 .

It is a cyclic number.

It is not a de Polignac number, because 255935497 - 2⁷ = 255935369 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 255935497.

It is not a weakly prime, because it can be changed into another prime (255935417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127967748 + 127967749.

It is an arithmetic number, because the mean of its divisors is an integer number (127967749).

Almost surely, 2^255935497 is an apocalyptic number.

It is an amenable number.

255935497 is a deficient number, since it is larger than the sum of its proper divisors (1).

255935497 is an equidigital number, since it uses as much as digits as its factorization.

255935497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1701000, while the sum is 49.

The square root of 255935497 is about 15997.9841542614. The cubic root of 255935497 is about 634.9070870732.

The spelling of 255935497 in words is "two hundred fifty-five million, nine hundred thirty-five thousand, four hundred ninety-seven".