171541 has 2 divisors, whose sum is σ = 171542. Its totient is φ = 171540.

The previous prime is 171539. The next prime is 171553. The reversal of 171541 is 145171.

171541 is nontrivially palindromic in base 13.

171541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125316 + 46225 = 354^2 + 215^2 .

It is a cyclic number.

It is not a de Polignac number, because 171541 - 2¹ = 171539 is a prime.

Together with 171539, it forms a pair of twin primes.

It is an Ulam number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85770 + 85771.

It is an arithmetic number, because the mean of its divisors is an integer number (85771).

2¹⁷¹⁵⁴¹ is an apocalyptic number.

It is an amenable number.

171541 is a deficient number, since it is larger than the sum of its proper divisors (1).

171541 is an equidigital number, since it uses as much as digits as its factorization.

171541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 140, while the sum is 19.

The square root of 171541 is about 414.1750837508. The cubic root of 171541 is about 55.5634639112.

The spelling of 171541 in words is "one hundred seventy-one thousand, five hundred forty-one".