8512321 has 4 divisors (see below), whose sum is σ = 8786944. Its totient is φ = 8237700.

The previous prime is 8512313. The next prime is 8512337. The reversal of 8512321 is 1232158.

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: 1232158 = 2 ⋅616079.

It is a cyclic number.

It is not a de Polignac number, because 8512321 - 2³ = 8512313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8512292 and 8512301.

It is not an unprimeable number, because it can be changed into a prime (8512351) 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, 137265 + ... + 137326.

It is an arithmetic number, because the mean of its divisors is an integer number (2196736).

Almost surely, 2^8512321 is an apocalyptic number.

It is an amenable number.

8512321 is a deficient number, since it is larger than the sum of its proper divisors (274623).

8512321 is a wasteful number, since it uses less digits than its factorization.

8512321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274622.

The product of its digits is 480, while the sum is 22.

The square root of 8512321 is about 2917.5882163184. The cubic root of 8512321 is about 204.1813154745.

Adding to 8512321 its reverse (1232158), we get a palindrome (9744479).

The spelling of 8512321 in words is "eight million, five hundred twelve thousand, three hundred twenty-one".