12533447 has 2 divisors, whose sum is σ = 12533448. Its totient is φ = 12533446.

The previous prime is 12533441. The next prime is 12533461. The reversal of 12533447 is 74433521.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12533447 - 2¹² = 12529351 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12533441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6266723 + 6266724.

It is an arithmetic number, because the mean of its divisors is an integer number (6266724).

Almost surely, 2^12533447 is an apocalyptic number.

12533447 is a deficient number, since it is larger than the sum of its proper divisors (1).

12533447 is an equidigital number, since it uses as much as digits as its factorization.

12533447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 29.

The square root of 12533447 is about 3540.2608660945. The cubic root of 12533447 is about 232.2862536261.

Adding to 12533447 its reverse (74433521), we get a palindrome (86966968).

The spelling of 12533447 in words is "twelve million, five hundred thirty-three thousand, four hundred forty-seven".