851171 has 2 divisors, whose sum is σ = 851172. Its totient is φ = 851170.

The previous prime is 851159. The next prime is 851177. The reversal of 851171 is 171158.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 851171 - 2¹⁰ = 850147 is a prime.

It is a Chen prime.

It is a zygodrome in base 2.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 851171.

It is not a weakly prime, because it can be changed into another prime (851177) 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 as a sum of consecutive naturals, namely, 425585 + 425586.

It is an arithmetic number, because the mean of its divisors is an integer number (425586).

2⁸⁵¹¹⁷¹ is an apocalyptic number.

851171 is a deficient number, since it is larger than the sum of its proper divisors (1).

851171 is an equidigital number, since it uses as much as digits as its factorization.

851171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 280, while the sum is 23.

The square root of 851171 is about 922.5892910716. The cubic root of 851171 is about 94.7703038013.

The spelling of 851171 in words is "eight hundred fifty-one thousand, one hundred seventy-one".