268515259 has 2 divisors, whose sum is σ = 268515260. Its totient is φ = 268515258.

The previous prime is 268515227. The next prime is 268515281. The reversal of 268515259 is 952515862.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 268515259 - 2⁵ = 268515227 is a prime.

It is not a weakly prime, because it can be changed into another prime (268515659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134257629 + 134257630.

It is an arithmetic number, because the mean of its divisors is an integer number (134257630).

Almost surely, 2^268515259 is an apocalyptic number.

268515259 is a deficient number, since it is larger than the sum of its proper divisors (1).

268515259 is an equidigital number, since it uses as much as digits as its factorization.

268515259 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216000, while the sum is 43.

The square root of 268515259 is about 16386.4352133098. The cubic root of 268515259 is about 645.1434963068.

The spelling of 268515259 in words is "two hundred sixty-eight million, five hundred fifteen thousand, two hundred fifty-nine".