12158507 has 2 divisors, whose sum is σ = 12158508. Its totient is φ = 12158506.

The previous prime is 12158501. The next prime is 12158521. The reversal of 12158507 is 70585121.

12158507 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (70585121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12158507 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12158507.

It is not a weakly prime, because it can be changed into another prime (12158501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6079253 + 6079254.

It is an arithmetic number, because the mean of its divisors is an integer number (6079254).

Almost surely, 2^12158507 is an apocalyptic number.

12158507 is a deficient number, since it is larger than the sum of its proper divisors (1).

12158507 is an equidigital number, since it uses as much as digits as its factorization.

12158507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2800, while the sum is 29.

The square root of 12158507 is about 3486.9050747045. The cubic root of 12158507 is about 229.9464714751.

The spelling of 12158507 in words is "twelve million, one hundred fifty-eight thousand, five hundred seven".