12481513 has 12 divisors (see below), whose sum is σ = 14196420. Its totient is φ = 10952480.

The previous prime is 12481493. The next prime is 12481517. The reversal of 12481513 is 31518421.

It can be written as a sum of positive squares in 2 ways, for example, as 3790809 + 8690704 = 1947^2 + 2948^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12481513 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 (12481517) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1731 + ... + 5287.

It is an arithmetic number, because the mean of its divisors is an integer number (1183035).

Almost surely, 2^12481513 is an apocalyptic number.

It is an amenable number.

12481513 is a deficient number, since it is larger than the sum of its proper divisors (1714907).

12481513 is a wasteful number, since it uses less digits than its factorization.

12481513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3608 (or 3597 counting only the distinct ones).

The product of its digits is 960, while the sum is 25.

The square root of 12481513 is about 3532.9184819353. The cubic root of 12481513 is about 231.9649731603.

Adding to 12481513 its reverse (31518421), we get a palindrome (43999934).

The spelling of 12481513 in words is "twelve million, four hundred eighty-one thousand, five hundred thirteen".