805171473 has 6 divisors (see below), whose sum is σ = 1163025474. Its totient is φ = 536780976.

The previous prime is 805171447. The next prime is 805171547. The reversal of 805171473 is 374171508.

It can be written as a sum of positive squares in only one way, i.e., 610485264 + 194686209 = 24708^2 + 13953^2 .

It is a de Polignac number, because none of the positive numbers 2^k-805171473 is a prime.

It is a super-2 number, since 2×805171473² = 1296602201865979458, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (805171973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 44731740 + ... + 44731757.

It is an arithmetic number, because the mean of its divisors is an integer number (193837579).

Almost surely, 2^805171473 is an apocalyptic number.

It is an amenable number.

805171473 is a deficient number, since it is larger than the sum of its proper divisors (357854001).

805171473 is a wasteful number, since it uses less digits than its factorization.

805171473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89463503 (or 89463500 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 805171473 is about 28375.5435718860. The cubic root of 805171473 is about 930.3137928274.

It can be divided in two parts, 8051 and 71473, that added together give a square (79524 = 282²).

The spelling of 805171473 in words is "eight hundred five million, one hundred seventy-one thousand, four hundred seventy-three".