12276551 has 8 divisors (see below), whose sum is σ = 14058144. Its totient is φ = 10501920.

The previous prime is 12276497. The next prime is 12276553. The reversal of 12276551 is 15567221.

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 12276551 - 2⁶ = 12276487 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 (12276553) 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, 2861 + ... + 5721.

It is an arithmetic number, because the mean of its divisors is an integer number (1757268).

Almost surely, 2^12276551 is an apocalyptic number.

12276551 is the 2861-st pentagonal number.

12276551 is a deficient number, since it is larger than the sum of its proper divisors (1781593).

12276551 is an equidigital number, since it uses as much as digits as its factorization.

12276551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3481.

The product of its digits is 4200, while the sum is 29.

The square root of 12276551 is about 3503.7909469602. The cubic root of 12276551 is about 230.6882409441.

The spelling of 12276551 in words is "twelve million, two hundred seventy-six thousand, five hundred fifty-one".