2171443 has 4 divisors (see below), whose sum is σ = 2182888. Its totient is φ = 2160000.

The previous prime is 2171441. The next prime is 2171497. The reversal of 2171443 is 3441712.

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

It is a cyclic number.

It is not a de Polignac number, because 2171443 - 2¹ = 2171441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2171441) 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, 5433 + ... + 5818.

It is an arithmetic number, because the mean of its divisors is an integer number (545722).

2^2171443 is an apocalyptic number.

2171443 is a deficient number, since it is larger than the sum of its proper divisors (11445).

2171443 is a wasteful number, since it uses less digits than its factorization.

2171443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11444.

The product of its digits is 672, while the sum is 22.

The square root of 2171443 is about 1473.5816909829. The cubic root of 2171443 is about 129.4939498175.

The spelling of 2171443 in words is "two million, one hundred seventy-one thousand, four hundred forty-three".