12533403 has 8 divisors (see below), whose sum is σ = 17694288. Its totient is φ = 7864064.

The previous prime is 12533377. The next prime is 12533441. The reversal of 12533403 is 30433521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12533403 - 2⁵ = 12533371 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12533403.

It is not an unprimeable number, because it can be changed into a prime (12533203) 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 in 7 ways as a sum of consecutive naturals, for example, 122826 + ... + 122927.

It is an arithmetic number, because the mean of its divisors is an integer number (2211786).

Almost surely, 2^12533403 is an apocalyptic number.

12533403 is a deficient number, since it is larger than the sum of its proper divisors (5160885).

12533403 is a wasteful number, since it uses less digits than its factorization.

12533403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245773.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 12533403 is about 3540.2546518577. The cubic root of 12533403 is about 232.2859818039.

Adding to 12533403 its reverse (30433521), we get a palindrome (42966924).

It can be divided in two parts, 1253 and 3403, that added together give a triangular number (4656 = T₉₆).

The spelling of 12533403 in words is "twelve million, five hundred thirty-three thousand, four hundred three".