85171793 has 4 divisors (see below), whose sum is σ = 97339200. Its totient is φ = 73004388.

The previous prime is 85171789. The next prime is 85171841. The reversal of 85171793 is 39717158.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85171793 - 2² = 85171789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85171793.

It is not an unprimeable number, because it can be changed into a prime (85171733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6083693 + ... + 6083706.

It is an arithmetic number, because the mean of its divisors is an integer number (24334800).

Almost surely, 2^85171793 is an apocalyptic number.

It is an amenable number.

85171793 is a deficient number, since it is larger than the sum of its proper divisors (12167407).

85171793 is a wasteful number, since it uses less digits than its factorization.

85171793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12167406.

The product of its digits is 52920, while the sum is 41.

The square root of 85171793 is about 9228.8565380550. The cubic root of 85171793 is about 439.9789814340.

The spelling of 85171793 in words is "eighty-five million, one hundred seventy-one thousand, seven hundred ninety-three".