171111089 has 2 divisors, whose sum is σ = 171111090. Its totient is φ = 171111088.

The previous prime is 171111071. The next prime is 171111167. The reversal of 171111089 is 980111171.

171111089 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., 93934864 + 77176225 = 9692^2 + 8785^2 .

It is a cyclic number.

It is not a de Polignac number, because 171111089 - 2⁸ = 171110833 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (171011089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85555544 + 85555545.

It is an arithmetic number, because the mean of its divisors is an integer number (85555545).

Almost surely, 2^171111089 is an apocalyptic number.

It is an amenable number.

171111089 is a deficient number, since it is larger than the sum of its proper divisors (1).

171111089 is an equidigital number, since it uses as much as digits as its factorization.

171111089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 29.

The square root of 171111089 is about 13080.9437350674. The cubic root of 171111089 is about 555.1700790864.

The spelling of 171111089 in words is "one hundred seventy-one million, one hundred eleven thousand, eighty-nine".