12547013 has 4 divisors (see below), whose sum is σ = 12838848. Its totient is φ = 12255180.

The previous prime is 12547009. The next prime is 12547057. The reversal of 12547013 is 31074521.

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 12547013 - 2² = 12547009 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12547013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12547813) 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, 145853 + ... + 145938.

It is an arithmetic number, because the mean of its divisors is an integer number (3209712).

Almost surely, 2^12547013 is an apocalyptic number.

It is an amenable number.

12547013 is a deficient number, since it is larger than the sum of its proper divisors (291835).

12547013 is an equidigital number, since it uses as much as digits as its factorization.

12547013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291834.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 12547013 is about 3542.1763084296. The cubic root of 12547013 is about 232.3700310329.

The spelling of 12547013 in words is "twelve million, five hundred forty-seven thousand, thirteen".