171085543 has 2 divisors, whose sum is σ = 171085544. Its totient is φ = 171085542.

The previous prime is 171085531. The next prime is 171085549. The reversal of 171085543 is 345580171.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 171085543 - 2⁵ = 171085511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 171085499 and 171085508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171085549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85542771 + 85542772.

It is an arithmetic number, because the mean of its divisors is an integer number (85542772).

Almost surely, 2^171085543 is an apocalyptic number.

171085543 is a deficient number, since it is larger than the sum of its proper divisors (1).

171085543 is an equidigital number, since it uses as much as digits as its factorization.

171085543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 171085543 is about 13079.9672400201. The cubic root of 171085543 is about 555.1424497049.

The spelling of 171085543 in words is "one hundred seventy-one million, eighty-five thousand, five hundred forty-three".