12791533 has 2 divisors, whose sum is σ = 12791534. Its totient is φ = 12791532.

The previous prime is 12791489. The next prime is 12791539. The reversal of 12791533 is 33519721.

12791533 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11682724 + 1108809 = 3418^2 + 1053^2 .

It is a cyclic number.

It is not a de Polignac number, because 12791533 - 2²¹ = 10694381 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12791495 and 12791504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12791539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6395766 + 6395767.

It is an arithmetic number, because the mean of its divisors is an integer number (6395767).

Almost surely, 2^12791533 is an apocalyptic number.

It is an amenable number.

12791533 is a deficient number, since it is larger than the sum of its proper divisors (1).

12791533 is an equidigital number, since it uses as much as digits as its factorization.

12791533 is an evil number, because the sum of its binary digits is even.

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

The square root of 12791533 is about 3576.5252690286. The cubic root of 12791533 is about 233.8698292255.

The spelling of 12791533 in words is "twelve million, seven hundred ninety-one thousand, five hundred thirty-three".