9245221 has 4 divisors (see below), whose sum is σ = 9396844. Its totient is φ = 9093600.

The previous prime is 9245189. The next prime is 9245233. The reversal of 9245221 is 1225429.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1225429 = 61 ⋅20089.

It can be written as a sum of positive squares in 2 ways, for example, as 3556996 + 5688225 = 1886^2 + 2385^2 .

It is a cyclic number.

It is not a de Polignac number, because 9245221 - 2⁵ = 9245189 is a prime.

It is a super-2 number, since 2×9245221² = 170948222677682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9245251) 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, 75720 + ... + 75841.

It is an arithmetic number, because the mean of its divisors is an integer number (2349211).

Almost surely, 2^9245221 is an apocalyptic number.

It is an amenable number.

9245221 is a deficient number, since it is larger than the sum of its proper divisors (151623).

9245221 is a wasteful number, since it uses less digits than its factorization.

9245221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151622.

The product of its digits is 1440, while the sum is 25.

The square root of 9245221 is about 3040.5955008847. The cubic root of 9245221 is about 209.8806653819.

The spelling of 9245221 in words is "nine million, two hundred forty-five thousand, two hundred twenty-one".