12915187 has 2 divisors, whose sum is σ = 12915188. Its totient is φ = 12915186.

The previous prime is 12915169. The next prime is 12915197. The reversal of 12915187 is 78151921.

It is a happy number.

12915187 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12915187 - 2⁷ = 12915059 is a prime.

It is not a weakly prime, because it can be changed into another prime (12915107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6457593 + 6457594.

It is an arithmetic number, because the mean of its divisors is an integer number (6457594).

Almost surely, 2^12915187 is an apocalyptic number.

12915187 is a deficient number, since it is larger than the sum of its proper divisors (1).

12915187 is an equidigital number, since it uses as much as digits as its factorization.

12915187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 34.

The square root of 12915187 is about 3593.7705825498. The cubic root of 12915187 is about 234.6210097646.

The spelling of 12915187 in words is "twelve million, nine hundred fifteen thousand, one hundred eighty-seven".