12811451 has 4 divisors (see below), whose sum is σ = 12842304. Its totient is φ = 12780600.

The previous prime is 12811423. The next prime is 12811457. The reversal of 12811451 is 15411821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15411821 = 787 ⋅19583.

It is a cyclic number.

It is not a de Polignac number, because 12811451 - 2¹⁸ = 12549307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12811457) 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, 14795 + ... + 15636.

It is an arithmetic number, because the mean of its divisors is an integer number (3210576).

Almost surely, 2^12811451 is an apocalyptic number.

12811451 is a deficient number, since it is larger than the sum of its proper divisors (30853).

12811451 is an equidigital number, since it uses as much as digits as its factorization.

12811451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30852.

The product of its digits is 320, while the sum is 23.

The square root of 12811451 is about 3579.3087321437. The cubic root of 12811451 is about 233.9911543640.

The spelling of 12811451 in words is "twelve million, eight hundred eleven thousand, four hundred fifty-one".