12791507 has 4 divisors (see below), whose sum is σ = 12805080. Its totient is φ = 12777936.

The previous prime is 12791489. The next prime is 12791533. The reversal of 12791507 is 70519721.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12791507 - 2¹⁴ = 12775123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12791587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5258 + ... + 7295.

It is an arithmetic number, because the mean of its divisors is an integer number (3201270).

Almost surely, 2^12791507 is an apocalyptic number.

12791507 is a deficient number, since it is larger than the sum of its proper divisors (13573).

12791507 is a wasteful number, since it uses less digits than its factorization.

12791507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13572.

The product of its (nonzero) digits is 4410, while the sum is 32.

The square root of 12791507 is about 3576.5216342139. The cubic root of 12791507 is about 233.8696707712.

The spelling of 12791507 in words is "twelve million, seven hundred ninety-one thousand, five hundred seven".