2851671 has 4 divisors (see below), whose sum is σ = 3802232. Its totient is φ = 1901112.

The previous prime is 2851661. The next prime is 2851727. The reversal of 2851671 is 1761582.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2851671 - 2⁷ = 2851543 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2851601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 475276 + ... + 475281.

It is an arithmetic number, because the mean of its divisors is an integer number (950558).

2^2851671 is an apocalyptic number.

2851671 is a deficient number, since it is larger than the sum of its proper divisors (950561).

2851671 is an equidigital number, since it uses as much as digits as its factorization.

2851671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950560.

The product of its digits is 3360, while the sum is 30.

The square root of 2851671 is about 1688.6891365790. The cubic root of 2851671 is about 141.8076977711.

The spelling of 2851671 in words is "two million, eight hundred fifty-one thousand, six hundred seventy-one".