8085221 has 4 divisors (see below), whose sum is σ = 8127744. Its totient is φ = 8042700.

The previous prime is 8085199. The next prime is 8085223. The reversal of 8085221 is 1225808.

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 8085221 - 2⁶ = 8085157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8085223) 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, 20975 + ... + 21356.

It is an arithmetic number, because the mean of its divisors is an integer number (2031936).

Almost surely, 2^8085221 is an apocalyptic number.

It is an amenable number.

8085221 is a deficient number, since it is larger than the sum of its proper divisors (42523).

8085221 is a wasteful number, since it uses less digits than its factorization.

8085221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42522.

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 8085221 is about 2843.4523030992. The cubic root of 8085221 is about 200.7076680762.

The spelling of 8085221 in words is "eight million, eighty-five thousand, two hundred twenty-one".