12544533 has 6 divisors (see below), whose sum is σ = 18119894. Its totient is φ = 8363016.

The previous prime is 12544529. The next prime is 12544547. The reversal of 12544533 is 33544521.

12544533 is a `hidden beast` number, since 125 + 4 + 4 + 533 = 666.

It can be written as a sum of positive squares in only one way, i.e., 7800849 + 4743684 = 2793^2 + 2178^2 .

It is not a de Polignac number, because 12544533 - 2² = 12544529 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12544497 and 12544506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12544513) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 696910 + ... + 696927.

Almost surely, 2^12544533 is an apocalyptic number.

It is an amenable number.

12544533 is a deficient number, since it is larger than the sum of its proper divisors (5575361).

12544533 is a wasteful number, since it uses less digits than its factorization.

12544533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1393843 (or 1393840 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 12544533 is about 3541.8262238568. The cubic root of 12544533 is about 232.3547202003.

The spelling of 12544533 in words is "twelve million, five hundred forty-four thousand, five hundred thirty-three".