12533603 has 4 divisors (see below), whose sum is σ = 12674520. Its totient is φ = 12392688.

The previous prime is 12533569. The next prime is 12533629. The reversal of 12533603 is 30633521.

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

It is a cyclic number.

It is not a de Polignac number, because 12533603 - 2¹⁰ = 12532579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12533663) 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 3 ways as a sum of consecutive naturals, for example, 70325 + ... + 70502.

It is an arithmetic number, because the mean of its divisors is an integer number (3168630).

Almost surely, 2^12533603 is an apocalyptic number.

12533603 is a deficient number, since it is larger than the sum of its proper divisors (140917).

12533603 is an equidigital number, since it uses as much as digits as its factorization.

12533603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140916.

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 12533603 is about 3540.2828983006. The cubic root of 12533603 is about 232.2872173542.

The spelling of 12533603 in words is "twelve million, five hundred thirty-three thousand, six hundred three".