12501147 has 4 divisors (see below), whose sum is σ = 16668200. Its totient is φ = 8334096.

The previous prime is 12501067. The next prime is 12501169. The reversal of 12501147 is 74110521.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12501147 - 2⁷ = 12501019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12501847) 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 in 3 ways as a sum of consecutive naturals, for example, 2083522 + ... + 2083527.

It is an arithmetic number, because the mean of its divisors is an integer number (4167050).

Almost surely, 2^12501147 is an apocalyptic number.

12501147 is a deficient number, since it is larger than the sum of its proper divisors (4167053).

12501147 is an equidigital number, since it uses as much as digits as its factorization.

12501147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4167052.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 12501147 is about 3535.6961125074. The cubic root of 12501147 is about 232.0865400001.

Adding to 12501147 its reverse (74110521), we get a palindrome (86611668).

The spelling of 12501147 in words is "twelve million, five hundred one thousand, one hundred forty-seven".