12861451 has 4 divisors (see below), whose sum is σ = 12870000. Its totient is φ = 12852904.

The previous prime is 12861427. The next prime is 12861463. The reversal of 12861451 is 15416821.

12861451 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12861451 - 2⁵ = 12861419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12861421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1351 + ... + 5248.

It is an arithmetic number, because the mean of its divisors is an integer number (3217500).

Almost surely, 2^12861451 is an apocalyptic number.

12861451 is a deficient number, since it is larger than the sum of its proper divisors (8549).

12861451 is an equidigital number, since it uses as much as digits as its factorization.

12861451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8548.

The product of its digits is 1920, while the sum is 28.

The square root of 12861451 is about 3586.2865195073. The cubic root of 12861451 is about 234.2951628756.

The spelling of 12861451 in words is "twelve million, eight hundred sixty-one thousand, four hundred fifty-one".