12057791 has 4 divisors (see below), whose sum is σ = 12446784. Its totient is φ = 11668800.

The previous prime is 12057769. The next prime is 12057797. The reversal of 12057791 is 19775021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19775021 = 7 ⋅2825003.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12057791 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 (12057797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194450 + ... + 194511.

It is an arithmetic number, because the mean of its divisors is an integer number (3111696).

Almost surely, 2^12057791 is an apocalyptic number.

12057791 is a deficient number, since it is larger than the sum of its proper divisors (388993).

12057791 is an equidigital number, since it uses as much as digits as its factorization.

12057791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388992.

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

The square root of 12057791 is about 3472.4330087131. The cubic root of 12057791 is about 229.3097833237.

The spelling of 12057791 in words is "twelve million, fifty-seven thousand, seven hundred ninety-one".