171047 has 2 divisors, whose sum is σ = 171048. Its totient is φ = 171046.

The previous prime is 171043. The next prime is 171049. The reversal of 171047 is 740171.

171047 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (740171) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 171047 - 2² = 171043 is a prime.

Together with 171049, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85523 + 85524.

It is an arithmetic number, because the mean of its divisors is an integer number (85524).

2¹⁷¹⁰⁴⁷ is an apocalyptic number.

171047 is a deficient number, since it is larger than the sum of its proper divisors (1).

171047 is an equidigital number, since it uses as much as digits as its factorization.

171047 is an odious number, because the sum of its binary digits is odd.

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

The square root of 171047 is about 413.5782876313. The cubic root of 171047 is about 55.5100758159.

The spelling of 171047 in words is "one hundred seventy-one thousand, forty-seven", and thus it is an iban number.