171158201 has 4 divisors (see below), whose sum is σ = 173220432. Its totient is φ = 169095972.

The previous prime is 171158191. The next prime is 171158219. The reversal of 171158201 is 102851171.

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: 102851171 = 157 ⋅655103.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-171158201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (171158291) 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, 1030991 + ... + 1031156.

It is an arithmetic number, because the mean of its divisors is an integer number (43305108).

Almost surely, 2^171158201 is an apocalyptic number.

It is an amenable number.

171158201 is a deficient number, since it is larger than the sum of its proper divisors (2062231).

171158201 is an equidigital number, since it uses as much as digits as its factorization.

171158201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2062230.

The product of its (nonzero) digits is 560, while the sum is 26.

The square root of 171158201 is about 13082.7443986344. The cubic root of 171158201 is about 555.2210260528.

The spelling of 171158201 in words is "one hundred seventy-one million, one hundred fifty-eight thousand, two hundred one".