195255539 has 2 divisors, whose sum is σ = 195255540. Its totient is φ = 195255538.

The previous prime is 195255517. The next prime is 195255559. The reversal of 195255539 is 935552591.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 195255539 - 2²⁴ = 178478323 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 195255539.

It is not a weakly prime, because it can be changed into another prime (195255559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97627769 + 97627770.

It is an arithmetic number, because the mean of its divisors is an integer number (97627770).

Almost surely, 2^195255539 is an apocalyptic number.

195255539 is a deficient number, since it is larger than the sum of its proper divisors (1).

195255539 is an equidigital number, since it uses as much as digits as its factorization.

195255539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 303750, while the sum is 44.

The square root of 195255539 is about 13973.3868120796. The cubic root of 195255539 is about 580.1421956154.

The spelling of 195255539 in words is "one hundred ninety-five million, two hundred fifty-five thousand, five hundred thirty-nine".