12285791 has 4 divisors (see below), whose sum is σ = 14040912. Its totient is φ = 10530672.

The previous prime is 12285731. The next prime is 12285797. The reversal of 12285791 is 19758221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12285791 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 (12285797) 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, 877550 + ... + 877563.

It is an arithmetic number, because the mean of its divisors is an integer number (3510228).

Almost surely, 2^12285791 is an apocalyptic number.

12285791 is a deficient number, since it is larger than the sum of its proper divisors (1755121).

12285791 is an equidigital number, since it uses as much as digits as its factorization.

12285791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1755120.

The product of its digits is 10080, while the sum is 35.

The square root of 12285791 is about 3505.1092707646. The cubic root of 12285791 is about 230.7461026024.

The spelling of 12285791 in words is "twelve million, two hundred eighty-five thousand, seven hundred ninety-one".