12533779 has 2 divisors, whose sum is σ = 12533780. Its totient is φ = 12533778.

The previous prime is 12533753. The next prime is 12533831. The reversal of 12533779 is 97733521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12533779 - 2¹³ = 12525587 is a prime.

It is not a weakly prime, because it can be changed into another prime (12530779) 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 as a sum of consecutive naturals, namely, 6266889 + 6266890.

It is an arithmetic number, because the mean of its divisors is an integer number (6266890).

Almost surely, 2^12533779 is an apocalyptic number.

12533779 is a deficient number, since it is larger than the sum of its proper divisors (1).

12533779 is an equidigital number, since it uses as much as digits as its factorization.

12533779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 39690, while the sum is 37.

The square root of 12533779 is about 3540.3077549840. The cubic root of 12533779 is about 232.2883046276.

The spelling of 12533779 in words is "twelve million, five hundred thirty-three thousand, seven hundred seventy-nine".