259591901 has 2 divisors, whose sum is σ = 259591902. Its totient is φ = 259591900.

The previous prime is 259591883. The next prime is 259591957. The reversal of 259591901 is 109195952.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 250747225 + 8844676 = 15835^2 + 2974^2 .

It is a cyclic number.

It is not a de Polignac number, because 259591901 - 2¹⁸ = 259329757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (259591991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129795950 + 129795951.

It is an arithmetic number, because the mean of its divisors is an integer number (129795951).

Almost surely, 2^259591901 is an apocalyptic number.

It is an amenable number.

259591901 is a deficient number, since it is larger than the sum of its proper divisors (1).

259591901 is an equidigital number, since it uses as much as digits as its factorization.

259591901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36450, while the sum is 41.

The square root of 259591901 is about 16111.8559142018. The cubic root of 259591901 is about 637.9163199376.

The spelling of 259591901 in words is "two hundred fifty-nine million, five hundred ninety-one thousand, nine hundred one".