12533543 has 6 divisors (see below), whose sum is σ = 13776672. Its totient is φ = 11394020.

The previous prime is 12533531. The next prime is 12533561. The reversal of 12533543 is 34533521.

It is not a de Polignac number, because 12533543 - 2⁴ = 12533527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12533513) 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 5 ways as a sum of consecutive naturals, for example, 51671 + ... + 51912.

It is an arithmetic number, because the mean of its divisors is an integer number (2296112).

Almost surely, 2^12533543 is an apocalyptic number.

12533543 is a deficient number, since it is larger than the sum of its proper divisors (1243129).

12533543 is a wasteful number, since it uses less digits than its factorization.

12533543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103605 (or 103594 counting only the distinct ones).

The product of its digits is 5400, while the sum is 26.

The square root of 12533543 is about 3540.2744243914. The cubic root of 12533543 is about 232.2868466905.

The spelling of 12533543 in words is "twelve million, five hundred thirty-three thousand, five hundred forty-three".