9541221 has 4 divisors (see below), whose sum is σ = 12721632. Its totient is φ = 6360812.

The previous prime is 9541187. The next prime is 9541223. The reversal of 9541221 is 1221459.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1221459 = 3 ⋅407153.

It is a cyclic number.

It is not a de Polignac number, because 9541221 - 2⁶ = 9541157 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 9541191 and 9541200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9541223) 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, 1590201 + ... + 1590206.

It is an arithmetic number, because the mean of its divisors is an integer number (3180408).

Almost surely, 2^9541221 is an apocalyptic number.

It is an amenable number.

9541221 is a deficient number, since it is larger than the sum of its proper divisors (3180411).

9541221 is a wasteful number, since it uses less digits than its factorization.

9541221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3180410.

The product of its digits is 720, while the sum is 24.

The square root of 9541221 is about 3088.8866926451. The cubic root of 9541221 is about 212.0970615830.

The spelling of 9541221 in words is "nine million, five hundred forty-one thousand, two hundred twenty-one".