159871 has 2 divisors, whose sum is σ = 159872. Its totient is φ = 159870.

The previous prime is 159869. The next prime is 159899. The reversal of 159871 is 178951.

It is a weak prime.

It is an emirp because it is prime and its reverse (178951) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 159871 - 2¹ = 159869 is a prime.

Together with 159869, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79935 + 79936.

It is an arithmetic number, because the mean of its divisors is an integer number (79936).

2¹⁵⁹⁸⁷¹ is an apocalyptic number.

159871 is a deficient number, since it is larger than the sum of its proper divisors (1).

159871 is an equidigital number, since it uses as much as digits as its factorization.

159871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 31.

The square root of 159871 is about 399.8387174849. The cubic root of 159871 is about 54.2737584144.

The spelling of 159871 in words is "one hundred fifty-nine thousand, eight hundred seventy-one".