47171 has 4 divisors (see below), whose sum is σ = 48312. Its totient is φ = 46032.

The previous prime is 47161. The next prime is 47189. The reversal of 47171 is 17174.

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 47171 - 2¹⁰ = 46147 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (47111) 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, 506 + ... + 591.

It is an arithmetic number, because the mean of its divisors is an integer number (12078).

2⁴⁷¹⁷¹ is an apocalyptic number.

47171 is a deficient number, since it is larger than the sum of its proper divisors (1141).

47171 is a wasteful number, since it uses less digits than its factorization.

47171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140.

The product of its digits is 196, while the sum is 20.

The square root of 47171 is about 217.1888579094. The cubic root of 47171 is about 36.1319744439.

The spelling of 47171 in words is "forty-seven thousand, one hundred seventy-one", and thus it is an iban number.