259020161 has 2 divisors, whose sum is σ = 259020162. Its totient is φ = 259020160.

The previous prime is 259020137. The next prime is 259020163. The reversal of 259020161 is 161020952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 217739536 + 41280625 = 14756^2 + 6425^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-259020161 is a prime.

Together with 259020163, it forms a pair of twin primes.

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 259020161.

It is not a weakly prime, because it can be changed into another prime (259020163) 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, 129510080 + 129510081.

It is an arithmetic number, because the mean of its divisors is an integer number (129510081).

Almost surely, 2^259020161 is an apocalyptic number.

It is an amenable number.

259020161 is a deficient number, since it is larger than the sum of its proper divisors (1).

259020161 is an equidigital number, since it uses as much as digits as its factorization.

259020161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 259020161 is about 16094.1032990347. The cubic root of 259020161 is about 637.4476479372.

The spelling of 259020161 in words is "two hundred fifty-nine million, twenty thousand, one hundred sixty-one".