12144551 has 8 divisors (see below), whose sum is σ = 12406944. Its totient is φ = 11884320.

The previous prime is 12144523. The next prime is 12144563. The reversal of 12144551 is 15544121.

12144551 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12144551 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 (12144521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15665 + ... + 16421.

It is an arithmetic number, because the mean of its divisors is an integer number (1550868).

Almost surely, 2^12144551 is an apocalyptic number.

12144551 is a deficient number, since it is larger than the sum of its proper divisors (262393).

12144551 is an equidigital number, since it uses as much as digits as its factorization.

12144551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081.

The product of its digits is 800, while the sum is 23.

The square root of 12144551 is about 3484.9032985149. The cubic root of 12144551 is about 229.8584573355.

Adding to 12144551 its reverse (15544121), we get a palindrome (27688672).

The spelling of 12144551 in words is "twelve million, one hundred forty-four thousand, five hundred fifty-one".