12137579 has 2 divisors, whose sum is σ = 12137580. Its totient is φ = 12137578.

The previous prime is 12137563. The next prime is 12137581. The reversal of 12137579 is 97573121.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (97573121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12137579 - 2⁴ = 12137563 is a prime.

It is a Sophie Germain prime.

Together with 12137581, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12137509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6068789 + 6068790.

It is an arithmetic number, because the mean of its divisors is an integer number (6068790).

Almost surely, 2^12137579 is an apocalyptic number.

12137579 is a deficient number, since it is larger than the sum of its proper divisors (1).

12137579 is an equidigital number, since it uses as much as digits as its factorization.

12137579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13230, while the sum is 35.

The square root of 12137579 is about 3483.9028402067. The cubic root of 12137579 is about 229.8144628469.

The spelling of 12137579 in words is "twelve million, one hundred thirty-seven thousand, five hundred seventy-nine".