12528533 has 4 divisors (see below), whose sum is σ = 12867180. Its totient is φ = 12189888.

The previous prime is 12528517. The next prime is 12528553. The reversal of 12528533 is 33582521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33582521 = 7 ⋅4797503.

It can be written as a sum of positive squares in 2 ways, for example, as 11785489 + 743044 = 3433^2 + 862^2 .

It is a cyclic number.

It is not a de Polignac number, because 12528533 - 2⁴ = 12528517 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12528496 and 12528505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12528553) 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, 169268 + ... + 169341.

It is an arithmetic number, because the mean of its divisors is an integer number (3216795).

Almost surely, 2^12528533 is an apocalyptic number.

It is an amenable number.

12528533 is a deficient number, since it is larger than the sum of its proper divisors (338647).

12528533 is an equidigital number, since it uses as much as digits as its factorization.

12528533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338646.

The product of its digits is 7200, while the sum is 29.

The square root of 12528533 is about 3539.5667814014. The cubic root of 12528533 is about 232.2558920967.

The spelling of 12528533 in words is "twelve million, five hundred twenty-eight thousand, five hundred thirty-three".