259563641 has 2 divisors, whose sum is σ = 259563642. Its totient is φ = 259563640.

The previous prime is 259563587. The next prime is 259563649. The reversal of 259563641 is 146365952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 234212416 + 25351225 = 15304^2 + 5035^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-259563641 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (259563649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129781820 + 129781821.

It is an arithmetic number, because the mean of its divisors is an integer number (129781821).

Almost surely, 2^259563641 is an apocalyptic number.

It is an amenable number.

259563641 is a deficient number, since it is larger than the sum of its proper divisors (1).

259563641 is an equidigital number, since it uses as much as digits as its factorization.

259563641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 194400, while the sum is 41.

The square root of 259563641 is about 16110.9788963924. The cubic root of 259563641 is about 637.8931705644.

The spelling of 259563641 in words is "two hundred fifty-nine million, five hundred sixty-three thousand, six hundred forty-one".