255698459 has 2 divisors, whose sum is σ = 255698460. Its totient is φ = 255698458.

The previous prime is 255698441. The next prime is 255698473. The reversal of 255698459 is 954896552.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255698459 is a prime.

It is a super-4 number, since 4×255698459⁴ (a number of 35 digits) contains 4444 as substring.

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 255698459.

It is not a weakly prime, because it can be changed into another prime (255698419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127849229 + 127849230.

It is an arithmetic number, because the mean of its divisors is an integer number (127849230).

Almost surely, 2^255698459 is an apocalyptic number.

255698459 is a deficient number, since it is larger than the sum of its proper divisors (1).

255698459 is an equidigital number, since it uses as much as digits as its factorization.

255698459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888000, while the sum is 53.

The square root of 255698459 is about 15990.5740672435. The cubic root of 255698459 is about 634.7110173689.

The spelling of 255698459 in words is "two hundred fifty-five million, six hundred ninety-eight thousand, four hundred fifty-nine".