12915503 has 4 divisors (see below), whose sum is σ = 12933720. Its totient is φ = 12897288.

The previous prime is 12915493. The next prime is 12915557. The reversal of 12915503 is 30551921.

12915503 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30551921 = 263 ⋅116167.

It is a cyclic number.

It is not a de Polignac number, because 12915503 - 2⁶ = 12915439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12915583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8000 + ... + 9477.

It is an arithmetic number, because the mean of its divisors is an integer number (3233430).

Almost surely, 2^12915503 is an apocalyptic number.

12915503 is a deficient number, since it is larger than the sum of its proper divisors (18217).

12915503 is an equidigital number, since it uses as much as digits as its factorization.

12915503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18216.

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 12915503 is about 3593.8145472464. The cubic root of 12915503 is about 234.6229232647.

The spelling of 12915503 in words is "twelve million, nine hundred fifteen thousand, five hundred three".