2851171 has 2 divisors, whose sum is σ = 2851172. Its totient is φ = 2851170.

The previous prime is 2851169. The next prime is 2851187. The reversal of 2851171 is 1711582.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2851171 - 2¹ = 2851169 is a prime.

Together with 2851169, it forms a pair of twin primes.

2851171 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2851111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1425585 + 1425586.

It is an arithmetic number, because the mean of its divisors is an integer number (1425586).

2^2851171 is an apocalyptic number.

2851171 is a deficient number, since it is larger than the sum of its proper divisors (1).

2851171 is an equidigital number, since it uses as much as digits as its factorization.

2851171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 560, while the sum is 25.

The square root of 2851171 is about 1688.5410862635. The cubic root of 2851171 is about 141.7994092982.

It can be divided in two parts, 28511 and 71, that added together give a palindrome (28582).

The spelling of 2851171 in words is "two million, eight hundred fifty-one thousand, one hundred seventy-one".