12501791 has 6 divisors (see below), whose sum is σ = 13194792. Its totient is φ = 11843460.

The previous prime is 12501779. The next prime is 12501793. The reversal of 12501791 is 19710521.

It is not a de Polignac number, because 12501791 - 2¹⁰ = 12500767 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 12501791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12501793) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16955 + ... + 17676.

It is an arithmetic number, because the mean of its divisors is an integer number (2199132).

Almost surely, 2^12501791 is an apocalyptic number.

12501791 is a deficient number, since it is larger than the sum of its proper divisors (693001).

12501791 is an equidigital number, since it uses as much as digits as its factorization.

12501791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34669 (or 34650 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 26.

The square root of 12501791 is about 3535.7871825097. The cubic root of 12501791 is about 232.0905252654.

The spelling of 12501791 in words is "twelve million, five hundred one thousand, seven hundred ninety-one".