171001 has 4 divisors (see below), whose sum is σ = 171904. Its totient is φ = 170100.

The previous prime is 170971. The next prime is 171007. The reversal of 171001 is 100171.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 100171 = 109 ⋅919.

It is a cyclic number.

It is not a de Polignac number, because 171001 - 2⁷ = 170873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (171007) 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, 45 + ... + 586.

It is an arithmetic number, because the mean of its divisors is an integer number (42976).

2¹⁷¹⁰⁰¹ is an apocalyptic number.

It is an amenable number.

171001 is a deficient number, since it is larger than the sum of its proper divisors (903).

171001 is an equidigital number, since it uses as much as digits as its factorization.

171001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902.

The product of its (nonzero) digits is 7, while the sum is 10.

The square root of 171001 is about 413.5226716880. The cubic root of 171001 is about 55.5050992258.

Adding to 171001 its reverse (100171), we get a palindrome (271172).

The spelling of 171001 in words is "one hundred seventy-one thousand, one", and thus it is an iban number.