171867271 has 4 divisors (see below), whose sum is σ = 172127944. Its totient is φ = 171606600.

The previous prime is 171867239. The next prime is 171867299. The reversal of 171867271 is 172768171.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 172768171 = 131 ⋅1318841.

It is a cyclic number.

It is not a de Polignac number, because 171867271 - 2⁵ = 171867239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171867211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129345 + ... + 130666.

It is an arithmetic number, because the mean of its divisors is an integer number (43031986).

Almost surely, 2^171867271 is an apocalyptic number.

171867271 is a deficient number, since it is larger than the sum of its proper divisors (260673).

171867271 is an equidigital number, since it uses as much as digits as its factorization.

171867271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260672.

The product of its digits is 32928, while the sum is 40.

The square root of 171867271 is about 13109.8158263188. The cubic root of 171867271 is about 555.9866883879.

The spelling of 171867271 in words is "one hundred seventy-one million, eight hundred sixty-seven thousand, two hundred seventy-one".