12551 has 8 divisors (see below), whose sum is σ = 15744. Its totient is φ = 9720.

The previous prime is 12547. The next prime is 12553. The reversal of 12551 is 15521.

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

It is a cyclic number.

It is not a de Polignac number, because 12551 - 2² = 12547 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 12551.

It is not an unprimeable number, because it can be changed into a prime (12553) 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, 5 + ... + 158.

It is an arithmetic number, because the mean of its divisors is an integer number (1968).

2¹²⁵⁵¹ is an apocalyptic number.

12551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12551 is a deficient number, since it is larger than the sum of its proper divisors (3193).

12551 is a wasteful number, since it uses less digits than its factorization.

12551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181.

The product of its digits is 50, while the sum is 14.

The square root of 12551 is about 112.0312456416. The cubic root of 12551 is about 23.2394641438.

It can be divided in two parts, 1 and 2551, that added together give a palindrome (2552).

The spelling of 12551 in words is "twelve thousand, five hundred fifty-one".