800171 has 2 divisors, whose sum is σ = 800172. Its totient is φ = 800170.

The previous prime is 800161. The next prime is 800209. The reversal of 800171 is 171008.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 800171 - 2¹⁰ = 799147 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (800131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400085 + 400086.

It is an arithmetic number, because the mean of its divisors is an integer number (400086).

2⁸⁰⁰¹⁷¹ is an apocalyptic number.

800171 is a deficient number, since it is larger than the sum of its proper divisors (1).

800171 is an equidigital number, since it uses as much as digits as its factorization.

800171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 17.

The square root of 800171 is about 894.5227777983. The cubic root of 800171 is about 92.8383904651.

Adding to 800171 its reverse (171008), we get a palindrome (971179).

The spelling of 800171 in words is "eight hundred thousand, one hundred seventy-one".