12917533 has 4 divisors (see below), whose sum is σ = 13110400. Its totient is φ = 12724668.

The previous prime is 12917507. The next prime is 12917563. The reversal of 12917533 is 33571921.

12917533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33571921 = 1187 ⋅28283.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12917533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12917495 and 12917504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12917503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96333 + ... + 96466.

It is an arithmetic number, because the mean of its divisors is an integer number (3277600).

Almost surely, 2^12917533 is an apocalyptic number.

It is an amenable number.

12917533 is a deficient number, since it is larger than the sum of its proper divisors (192867).

12917533 is an equidigital number, since it uses as much as digits as its factorization.

12917533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192866.

The product of its digits is 5670, while the sum is 31.

The square root of 12917533 is about 3594.0969658594. The cubic root of 12917533 is about 234.6352149419.

The spelling of 12917533 in words is "twelve million, nine hundred seventeen thousand, five hundred thirty-three".