9214521 has 4 divisors (see below), whose sum is σ = 12286032. Its totient is φ = 6143012.

The previous prime is 9214511. The next prime is 9214531. The reversal of 9214521 is 1254129.

9214521 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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: 1254129 = 3 ⋅418043.

It is an interprime number because it is at equal distance from previous prime (9214511) and next prime (9214531).

It is a cyclic number.

It is not a de Polignac number, because 9214521 - 2⁷ = 9214393 is a prime.

It is an alternating number because its digits alternate between odd and even.

9214521 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 9214491 and 9214500.

It is not an unprimeable number, because it can be changed into a prime (9214501) 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, 1535751 + ... + 1535756.

It is an arithmetic number, because the mean of its divisors is an integer number (3071508).

Almost surely, 2^9214521 is an apocalyptic number.

It is an amenable number.

9214521 is a deficient number, since it is larger than the sum of its proper divisors (3071511).

9214521 is a wasteful number, since it uses less digits than its factorization.

9214521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3071510.

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

The square root of 9214521 is about 3035.5429497867. The cubic root of 9214521 is about 209.6480954375.

The spelling of 9214521 in words is "nine million, two hundred fourteen thousand, five hundred twenty-one".