259801247 has 2 divisors, whose sum is σ = 259801248. Its totient is φ = 259801246.

The previous prime is 259801237. The next prime is 259801271. The reversal of 259801247 is 742108952.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 259801247 - 2²⁰ = 258752671 is a prime.

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 259801247.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (259801207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129900623 + 129900624.

It is an arithmetic number, because the mean of its divisors is an integer number (129900624).

Almost surely, 2^259801247 is an apocalyptic number.

259801247 is a deficient number, since it is larger than the sum of its proper divisors (1).

259801247 is an equidigital number, since it uses as much as digits as its factorization.

259801247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 259801247 is about 16118.3512494299. The cubic root of 259801247 is about 638.0877548535.

The spelling of 259801247 in words is "two hundred fifty-nine million, eight hundred one thousand, two hundred forty-seven".