197171 has 8 divisors (see below), whose sum is σ = 220080. Its totient is φ = 175392.

The previous prime is 197161. The next prime is 197203. The reversal of 197171 is 171791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-197171 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 197171.

It is not an unprimeable number, because it can be changed into a prime (197101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116 + ... + 638.

It is an arithmetic number, because the mean of its divisors is an integer number (27510).

2¹⁹⁷¹⁷¹ is an apocalyptic number.

197171 is a deficient number, since it is larger than the sum of its proper divisors (22909).

197171 is a wasteful number, since it uses less digits than its factorization.

197171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565.

The product of its digits is 441, while the sum is 26.

The square root of 197171 is about 444.0394126651. The cubic root of 197171 is about 58.2033094877.

The spelling of 197171 in words is "one hundred ninety-seven thousand, one hundred seventy-one".