12457513 has 4 divisors (see below), whose sum is σ = 12999168. Its totient is φ = 11915860.

The previous prime is 12457499. The next prime is 12457519. The reversal of 12457513 is 31575421.

It is a happy number.

12457513 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12457513 - 2⁹ = 12457001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12457519) 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, 270793 + ... + 270838.

It is an arithmetic number, because the mean of its divisors is an integer number (3249792).

Almost surely, 2^12457513 is an apocalyptic number.

It is an amenable number.

12457513 is a deficient number, since it is larger than the sum of its proper divisors (541655).

12457513 is an equidigital number, since it uses as much as digits as its factorization.

12457513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541654.

The product of its digits is 4200, while the sum is 28.

The square root of 12457513 is about 3529.5202223532. The cubic root of 12457513 is about 231.8162002930.

The spelling of 12457513 in words is "twelve million, four hundred fifty-seven thousand, five hundred thirteen".