85775759 has 2 divisors, whose sum is σ = 85775760. Its totient is φ = 85775758.

The previous prime is 85775737. The next prime is 85775773. The reversal of 85775759 is 95757758.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85775759 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85775759.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85775059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42887879 + 42887880.

It is an arithmetic number, because the mean of its divisors is an integer number (42887880).

Almost surely, 2^85775759 is an apocalyptic number.

85775759 is a deficient number, since it is larger than the sum of its proper divisors (1).

85775759 is an equidigital number, since it uses as much as digits as its factorization.

85775759 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3087000, while the sum is 53.

The square root of 85775759 is about 9261.5203395555. The cubic root of 85775759 is about 441.0165185614.

The spelling of 85775759 in words is "eighty-five million, seven hundred seventy-five thousand, seven hundred fifty-nine".