12912533 has 4 divisors (see below), whose sum is σ = 13592160. Its totient is φ = 12232908.

The previous prime is 12912527. The next prime is 12912551. The reversal of 12912533 is 33521921.

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.

It is a cyclic number.

It is not a de Polignac number, because 12912533 - 2¹² = 12908437 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 (12912553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 339785 + ... + 339822.

It is an arithmetic number, because the mean of its divisors is an integer number (3398040).

Almost surely, 2^12912533 is an apocalyptic number.

It is an amenable number.

12912533 is a deficient number, since it is larger than the sum of its proper divisors (679627).

12912533 is an equidigital number, since it uses as much as digits as its factorization.

12912533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679626.

The product of its digits is 1620, while the sum is 26.

The square root of 12912533 is about 3593.4013135190. The cubic root of 12912533 is about 234.6049375540.

The spelling of 12912533 in words is "twelve million, nine hundred twelve thousand, five hundred thirty-three".