862171 has 2 divisors, whose sum is σ = 862172. Its totient is φ = 862170.

The previous prime is 862159. The next prime is 862177. The reversal of 862171 is 171268.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 862171 - 2⁵ = 862139 is a prime.

862171 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (862177) 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, 431085 + 431086.

It is an arithmetic number, because the mean of its divisors is an integer number (431086).

2⁸⁶²¹⁷¹ is an apocalyptic number.

862171 is a deficient number, since it is larger than the sum of its proper divisors (1).

862171 is an equidigital number, since it uses as much as digits as its factorization.

862171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 672, while the sum is 25.

The square root of 862171 is about 928.5316365100. The cubic root of 862171 is about 95.1768083116.

The spelling of 862171 in words is "eight hundred sixty-two thousand, one hundred seventy-one".