259206091 has 2 divisors, whose sum is σ = 259206092. Its totient is φ = 259206090.

The previous prime is 259206071. The next prime is 259206119. The reversal of 259206091 is 190602952.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 259206091 - 2⁷ = 259205963 is a prime.

It is a super-2 number, since 2×259206091² = 134375595223000562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (259206001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129603045 + 129603046.

It is an arithmetic number, because the mean of its divisors is an integer number (129603046).

Almost surely, 2^259206091 is an apocalyptic number.

259206091 is a deficient number, since it is larger than the sum of its proper divisors (1).

259206091 is an equidigital number, since it uses as much as digits as its factorization.

259206091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 259206091 is about 16099.8786020268. The cubic root of 259206091 is about 637.6001358017.

The spelling of 259206091 in words is "two hundred fifty-nine million, two hundred six thousand, ninety-one".