12533257 has 4 divisors (see below), whose sum is σ = 13672656. Its totient is φ = 11393860.

The previous prime is 12533237. The next prime is 12533263. The reversal of 12533257 is 75233521.

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 12533257 - 2¹¹ = 12531209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12533237) 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, 569683 + ... + 569704.

It is an arithmetic number, because the mean of its divisors is an integer number (3418164).

Almost surely, 2^12533257 is an apocalyptic number.

It is an amenable number.

12533257 is a deficient number, since it is larger than the sum of its proper divisors (1139399).

12533257 is a wasteful number, since it uses less digits than its factorization.

12533257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139398.

The product of its digits is 6300, while the sum is 28.

The square root of 12533257 is about 3540.2340318120. The cubic root of 12533257 is about 232.2850798439.

Adding to 12533257 its reverse (75233521), we get a palindrome (87766778).

The spelling of 12533257 in words is "twelve million, five hundred thirty-three thousand, two hundred fifty-seven".