171089143 has 2 divisors, whose sum is σ = 171089144. Its totient is φ = 171089142.

The previous prime is 171089117. The next prime is 171089153. The reversal of 171089143 is 341980171.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-171089143 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 171089099 and 171089108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171089153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85544571 + 85544572.

It is an arithmetic number, because the mean of its divisors is an integer number (85544572).

Almost surely, 2^171089143 is an apocalyptic number.

171089143 is a deficient number, since it is larger than the sum of its proper divisors (1).

171089143 is an equidigital number, since it uses as much as digits as its factorization.

171089143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 171089143 is about 13080.1048543198. The cubic root of 171089143 is about 555.1463434662.

It can be divided in two parts, 1710 and 89143, that multiplied together give a triangular number (152434530 = T₁₇₄₆₀).

The spelling of 171089143 in words is "one hundred seventy-one million, eighty-nine thousand, one hundred forty-three".