2149171 has 2 divisors, whose sum is σ = 2149172. Its totient is φ = 2149170.

The previous prime is 2149151. The next prime is 2149177. The reversal of 2149171 is 1719412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2149171 - 2⁵ = 2149139 is a prime.

It is not a weakly prime, because it can be changed into another prime (2149177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1074585 + 1074586.

It is an arithmetic number, because the mean of its divisors is an integer number (1074586).

2^2149171 is an apocalyptic number.

2149171 is a deficient number, since it is larger than the sum of its proper divisors (1).

2149171 is an equidigital number, since it uses as much as digits as its factorization.

2149171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 504, while the sum is 25.

The square root of 2149171 is about 1466.0051159529. The cubic root of 2149171 is about 129.0496974151.

The spelling of 2149171 in words is "two million, one hundred forty-nine thousand, one hundred seventy-one".