259198087 has 2 divisors, whose sum is σ = 259198088. Its totient is φ = 259198086.

The previous prime is 259198081. The next prime is 259198103. The reversal of 259198087 is 780891952.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 259198087 - 2⁷ = 259197959 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 259198087.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (259198081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129599043 + 129599044.

It is an arithmetic number, because the mean of its divisors is an integer number (129599044).

Almost surely, 2^259198087 is an apocalyptic number.

259198087 is a deficient number, since it is larger than the sum of its proper divisors (1).

259198087 is an equidigital number, since it uses as much as digits as its factorization.

259198087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 49.

The square root of 259198087 is about 16099.6300268050. The cubic root of 259198087 is about 637.5935729364.

The spelling of 259198087 in words is "two hundred fifty-nine million, one hundred ninety-eight thousand, eighty-seven".