85102217 has 4 divisors (see below), whose sum is σ = 85324800. Its totient is φ = 84879636.

The previous prime is 85102207. The next prime is 85102229. The reversal of 85102217 is 71220158.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85102217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85102207) 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 3 ways as a sum of consecutive naturals, for example, 110717 + ... + 111482.

It is an arithmetic number, because the mean of its divisors is an integer number (21331200).

Almost surely, 2^85102217 is an apocalyptic number.

It is an amenable number.

85102217 is a deficient number, since it is larger than the sum of its proper divisors (222583).

85102217 is a wasteful number, since it uses less digits than its factorization.

85102217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222582.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 85102217 is about 9225.0862868593. The cubic root of 85102217 is about 439.8591439625.

The spelling of 85102217 in words is "eighty-five million, one hundred two thousand, two hundred seventeen".