12532321 has 4 divisors (see below), whose sum is σ = 12964500. Its totient is φ = 12100144.

The previous prime is 12532313. The next prime is 12532337. The reversal of 12532321 is 12323521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3651921 + 8880400 = 1911^2 + 2980^2 .

It is a cyclic number.

It is not a de Polignac number, because 12532321 - 2³ = 12532313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12532301) 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, 216046 + ... + 216103.

It is an arithmetic number, because the mean of its divisors is an integer number (3241125).

Almost surely, 2^12532321 is an apocalyptic number.

It is an amenable number.

12532321 is a deficient number, since it is larger than the sum of its proper divisors (432179).

12532321 is an equidigital number, since it uses as much as digits as its factorization.

12532321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432178.

The product of its digits is 360, while the sum is 19.

The square root of 12532321 is about 3540.1018346935. The cubic root of 12532321 is about 232.2792972489.

Adding to 12532321 its reverse (12323521), we get a palindrome (24855842).

The spelling of 12532321 in words is "twelve million, five hundred thirty-two thousand, three hundred twenty-one".