171229 has 4 divisors (see below), whose sum is σ = 173376. Its totient is φ = 169084.

The previous prime is 171203. The next prime is 171233. The reversal of 171229 is 922171.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 922171 = 29 ⋅31799.

It is a cyclic number.

It is not a de Polignac number, because 171229 - 2¹¹ = 169181 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171299) 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 3 ways as a sum of consecutive naturals, for example, 949 + ... + 1114.

It is an arithmetic number, because the mean of its divisors is an integer number (43344).

2¹⁷¹²²⁹ is an apocalyptic number.

It is an amenable number.

171229 is a deficient number, since it is larger than the sum of its proper divisors (2147).

171229 is an equidigital number, since it uses as much as digits as its factorization.

171229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2146.

The product of its digits is 252, while the sum is 22.

The square root of 171229 is about 413.7982600253. The cubic root of 171229 is about 55.5297570588.

It can be divided in two parts, 171 and 229, that added together give a square (400 = 20²).

The spelling of 171229 in words is "one hundred seventy-one thousand, two hundred twenty-nine".