43171 has 4 divisors (see below), whose sum is σ = 45072. Its totient is φ = 41272.

The previous prime is 43159. The next prime is 43177. The reversal of 43171 is 17134.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 916 + ... + 961.

It is an arithmetic number, because the mean of its divisors is an integer number (11268).

2⁴³¹⁷¹ is an apocalyptic number.

43171 is a deficient number, since it is larger than the sum of its proper divisors (1901).

43171 is a wasteful number, since it uses less digits than its factorization.

43171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1900.

The product of its digits is 84, while the sum is 16.

The square root of 43171 is about 207.7763220389. The cubic root of 43171 is about 35.0803595719.

The spelling of 43171 in words is "forty-three thousand, one hundred seventy-one", and thus it is an iban number.