9222521 has 8 divisors (see below), whose sum is σ = 11498304. Its totient is φ = 7186320.

The previous prime is 9222491. The next prime is 9222523. The reversal of 9222521 is 1252229.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9222521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9222523) 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 in 7 ways as a sum of consecutive naturals, for example, 59810 + ... + 59963.

It is an arithmetic number, because the mean of its divisors is an integer number (1437288).

Almost surely, 2^9222521 is an apocalyptic number.

It is an amenable number.

9222521 is a deficient number, since it is larger than the sum of its proper divisors (2275783).

9222521 is a wasteful number, since it uses less digits than its factorization.

9222521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119791.

The product of its digits is 720, while the sum is 23.

The square root of 9222521 is about 3036.8603853322. The cubic root of 9222521 is about 209.7087496890.

It can be divided in two parts, 922 and 2521, that added together give a palindrome (3443).

The spelling of 9222521 in words is "nine million, two hundred twenty-two thousand, five hundred twenty-one".