12744551 has 4 divisors (see below), whose sum is σ = 12829104. Its totient is φ = 12660000.

The previous prime is 12744527. The next prime is 12744569. The reversal of 12744551 is 15544721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15544721 = 1823 ⋅8527.

It is a cyclic number.

It is not a de Polignac number, because 12744551 - 2¹⁰ = 12743527 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 (12744581) 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, 42050 + ... + 42351.

It is an arithmetic number, because the mean of its divisors is an integer number (3207276).

Almost surely, 2^12744551 is an apocalyptic number.

12744551 is a deficient number, since it is larger than the sum of its proper divisors (84553).

12744551 is an equidigital number, since it uses as much as digits as its factorization.

12744551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84552.

The product of its digits is 5600, while the sum is 29.

The square root of 12744551 is about 3569.9511201136. The cubic root of 12744551 is about 233.5831512583.

The spelling of 12744551 in words is "twelve million, seven hundred forty-four thousand, five hundred fifty-one".