12553533 has 12 divisors (see below), whose sum is σ = 18203328. Its totient is φ = 8336520.

The previous prime is 12553529. The next prime is 12553553. The reversal of 12553533 is 33535521.

12553533 is a `hidden beast` number, since 125 + 5 + 3 + 533 = 666.

It is not a de Polignac number, because 12553533 - 2² = 12553529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12553497 and 12553506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12553523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 135 + ... + 5012.

It is an arithmetic number, because the mean of its divisors is an integer number (1516944).

Almost surely, 2^12553533 is an apocalyptic number.

It is an amenable number.

12553533 is a deficient number, since it is larger than the sum of its proper divisors (5649795).

12553533 is a wasteful number, since it uses less digits than its factorization.

12553533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5424 (or 5421 counting only the distinct ones).

The product of its digits is 6750, while the sum is 27.

The square root of 12553533 is about 3543.0965270509. The cubic root of 12553533 is about 232.4102740838.

The spelling of 12553533 in words is "twelve million, five hundred fifty-three thousand, five hundred thirty-three".