85203217 has 4 divisors (see below), whose sum is σ = 92948976. Its totient is φ = 77457460.

The previous prime is 85203211. The next prime is 85203259. The reversal of 85203217 is 71230258.

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 not a de Polignac number, because 85203217 - 2⁷ = 85203089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85203211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3872863 + ... + 3872884.

It is an arithmetic number, because the mean of its divisors is an integer number (23237244).

Almost surely, 2^85203217 is an apocalyptic number.

It is an amenable number.

85203217 is a deficient number, since it is larger than the sum of its proper divisors (7745759).

85203217 is a wasteful number, since it uses less digits than its factorization.

85203217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7745758.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 85203217 is about 9230.5588671543. The cubic root of 85203217 is about 440.0330846334.

It can be divided in two parts, 85 and 203217, that added together give a palindrome (203302).

The spelling of 85203217 in words is "eighty-five million, two hundred three thousand, two hundred seventeen".