805171097 has 16 divisors (see below), whose sum is σ = 864918912. Its totient is φ = 747584640.

The previous prime is 805171067. The next prime is 805171121. The reversal of 805171097 is 790171508.

It is not a de Polignac number, because 805171097 - 2¹⁰ = 805170073 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 805171097.

It is not an unprimeable number, because it can be changed into a prime (805171067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 485093 + ... + 486749.

It is an arithmetic number, because the mean of its divisors is an integer number (54057432).

Almost surely, 2^805171097 is an apocalyptic number.

It is an amenable number.

805171097 is a deficient number, since it is larger than the sum of its proper divisors (59747815).

805171097 is a wasteful number, since it uses less digits than its factorization.

805171097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2288.

The product of its (nonzero) digits is 17640, while the sum is 38.

The square root of 805171097 is about 28375.5369464615. The cubic root of 805171097 is about 930.3136480143.

The spelling of 805171097 in words is "eight hundred five million, one hundred seventy-one thousand, ninety-seven".