171491241 has 4 divisors (see below), whose sum is σ = 228654992. Its totient is φ = 114327492.

The previous prime is 171491227. The next prime is 171491269. The reversal of 171491241 is 142194171.

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.

It is not a de Polignac number, because 171491241 - 2¹⁰ = 171490217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 171491199 and 171491208.

It is not an unprimeable number, because it can be changed into a prime (171491141) 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, 28581871 + ... + 28581876.

It is an arithmetic number, because the mean of its divisors is an integer number (57163748).

Almost surely, 2^171491241 is an apocalyptic number.

It is an amenable number.

171491241 is a deficient number, since it is larger than the sum of its proper divisors (57163751).

171491241 is an equidigital number, since it uses as much as digits as its factorization.

171491241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57163750.

The product of its digits is 2016, while the sum is 30.

The square root of 171491241 is about 13095.4664292647. The cubic root of 171491241 is about 555.5809094933.

The spelling of 171491241 in words is "one hundred seventy-one million, four hundred ninety-one thousand, two hundred forty-one".