12305451 has 4 divisors (see below), whose sum is σ = 16407272. Its totient is φ = 8203632.

The previous prime is 12305441. The next prime is 12305471. The reversal of 12305451 is 15450321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15450321 = 3 ⋅5150107.

It is a de Polignac number, because none of the positive numbers 2^k-12305451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12305401) 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, 2050906 + ... + 2050911.

It is an arithmetic number, because the mean of its divisors is an integer number (4101818).

Almost surely, 2^12305451 is an apocalyptic number.

12305451 is a deficient number, since it is larger than the sum of its proper divisors (4101821).

12305451 is an equidigital number, since it uses as much as digits as its factorization.

12305451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4101820.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 12305451 is about 3507.9126271901. The cubic root of 12305451 is about 230.8691187148.

Adding to 12305451 its reverse (15450321), we get a palindrome (27755772).

The spelling of 12305451 in words is "twelve million, three hundred five thousand, four hundred fifty-one".