173871 has 6 divisors (see below), whose sum is σ = 251160. Its totient is φ = 115908.

The previous prime is 173867. The next prime is 173891. The reversal of 173871 is 178371.

It is not a de Polignac number, because 173871 - 2² = 173867 is a prime.

It is a super-2 number, since 2×173871² = 60462249282, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (173851) 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 in 5 ways as a sum of consecutive naturals, for example, 9651 + ... + 9668.

It is an arithmetic number, because the mean of its divisors is an integer number (41860).

2¹⁷³⁸⁷¹ is an apocalyptic number.

173871 is a deficient number, since it is larger than the sum of its proper divisors (77289).

173871 is a wasteful number, since it uses less digits than its factorization.

173871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19325 (or 19322 counting only the distinct ones).

The product of its digits is 1176, while the sum is 27.

The square root of 173871 is about 416.9784167076. The cubic root of 173871 is about 55.8139018047.

The spelling of 173871 in words is "one hundred seventy-three thousand, eight hundred seventy-one".