85801165 has 4 divisors (see below), whose sum is σ = 102961404. Its totient is φ = 68640928.

The previous prime is 85801153. The next prime is 85801171. The reversal of 85801165 is 56110858.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28238596 + 57562569 = 5314^2 + 7587^2 .

It is a cyclic number.

It is not a de Polignac number, because 85801165 - 2²³ = 77412557 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85801165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8580112 + ... + 8580121.

It is an arithmetic number, because the mean of its divisors is an integer number (25740351).

Almost surely, 2^85801165 is an apocalyptic number.

It is an amenable number.

85801165 is a deficient number, since it is larger than the sum of its proper divisors (17160239).

85801165 is a wasteful number, since it uses less digits than its factorization.

85801165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17160238.

The product of its (nonzero) digits is 9600, while the sum is 34.

The square root of 85801165 is about 9262.8918270700. The cubic root of 85801165 is about 441.0600559576.

The spelling of 85801165 in words is "eighty-five million, eight hundred one thousand, one hundred sixty-five".