171108 has 54 divisors (see below), whose sum is σ = 508326. Its totient is φ = 48384.

The previous prime is 171103. The next prime is 171131. The reversal of 171108 is 801171.

It can be written as a sum of positive squares in only one way, i.e., 142884 + 28224 = 378^2 + 168^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (171103) by changing a digit.

171108 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1716 + ... + 1812.

2¹⁷¹¹⁰⁸ is an apocalyptic number.

171108 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 171108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254163).

171108 is an abundant number, since it is smaller than the sum of its proper divisors (337218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

171108 is a wasteful number, since it uses less digits than its factorization.

171108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121 (or 109 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 18.

The square root of 171108 is about 413.6520276754. The cubic root of 171108 is about 55.5166738312.

Adding to 171108 its reverse (801171), we get a palindrome (972279).

The spelling of 171108 in words is "one hundred seventy-one thousand, one hundred eight".