12032509 has 2 divisors, whose sum is σ = 12032510. Its totient is φ = 12032508.

The previous prime is 12032429. The next prime is 12032521. The reversal of 12032509 is 90523021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10381284 + 1651225 = 3222^2 + 1285^2 .

It is a cyclic number.

It is not a de Polignac number, because 12032509 - 2¹¹ = 12030461 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12032509.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12032599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6016254 + 6016255.

It is an arithmetic number, because the mean of its divisors is an integer number (6016255).

Almost surely, 2^12032509 is an apocalyptic number.

It is an amenable number.

12032509 is a deficient number, since it is larger than the sum of its proper divisors (1).

12032509 is an equidigital number, since it uses as much as digits as its factorization.

12032509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 12032509 is about 3468.7907114728. The cubic root of 12032509 is about 229.1494038493.

The spelling of 12032509 in words is "twelve million, thirty-two thousand, five hundred nine".