12515243 has 16 divisors (see below), whose sum is σ = 14810880. Its totient is φ = 10463904.

The previous prime is 12515203. The next prime is 12515311. The reversal of 12515243 is 34251521.

It is a cyclic number.

It is not a de Polignac number, because 12515243 - 2⁸ = 12514987 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (12515203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4580 + ... + 6782.

It is an arithmetic number, because the mean of its divisors is an integer number (925680).

Almost surely, 2^12515243 is an apocalyptic number.

12515243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12515243 is a deficient number, since it is larger than the sum of its proper divisors (2295637).

12515243 is a wasteful number, since it uses less digits than its factorization.

12515243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2258.

The product of its digits is 1200, while the sum is 23.

The square root of 12515243 is about 3537.6889348839. The cubic root of 12515243 is about 232.1737390125.

Adding to 12515243 its reverse (34251521), we get a palindrome (46766764).

The spelling of 12515243 in words is "twelve million, five hundred fifteen thousand, two hundred forty-three".