85745171 has 2 divisors, whose sum is σ = 85745172. Its totient is φ = 85745170.

The previous prime is 85745147. The next prime is 85745197. The reversal of 85745171 is 17154758.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85745171 - 2¹⁰ = 85744147 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (85745111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42872585 + 42872586.

It is an arithmetic number, because the mean of its divisors is an integer number (42872586).

Almost surely, 2^85745171 is an apocalyptic number.

85745171 is a deficient number, since it is larger than the sum of its proper divisors (1).

85745171 is an equidigital number, since it uses as much as digits as its factorization.

85745171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 39200, while the sum is 38.

The square root of 85745171 is about 9259.8688435636. The cubic root of 85745171 is about 440.9640895408.

The spelling of 85745171 in words is "eighty-five million, seven hundred forty-five thousand, one hundred seventy-one".