85145217 has 8 divisors (see below), whose sum is σ = 113781600. Its totient is φ = 56636160.

The previous prime is 85145209. The next prime is 85145227. The reversal of 85145217 is 71254158.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85145217 - 2³ = 85145209 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (85145227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30259 + ... + 32952.

It is an arithmetic number, because the mean of its divisors is an integer number (14222700).

Almost surely, 2^85145217 is an apocalyptic number.

It is an amenable number.

85145217 is a deficient number, since it is larger than the sum of its proper divisors (28636383).

85145217 is a wasteful number, since it uses less digits than its factorization.

85145217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63663.

The product of its digits is 11200, while the sum is 33.

The square root of 85145217 is about 9227.4165940419. The cubic root of 85145217 is about 439.9332147258.

It can be divided in two parts, 8514 and 5217, that added together give a palindrome (13731).

The spelling of 85145217 in words is "eighty-five million, one hundred forty-five thousand, two hundred seventeen".