12551047 has 4 divisors (see below), whose sum is σ = 12692160. Its totient is φ = 12409936.

The previous prime is 12551017. The next prime is 12551053. The reversal of 12551047 is 74015521.

12551047 is nontrivially palindromic in base 13.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12551047 - 2¹¹ = 12548999 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 (12551017) 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, 70423 + ... + 70600.

It is an arithmetic number, because the mean of its divisors is an integer number (3173040).

Almost surely, 2^12551047 is an apocalyptic number.

12551047 is a deficient number, since it is larger than the sum of its proper divisors (141113).

12551047 is an equidigital number, since it uses as much as digits as its factorization.

12551047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141112.

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 12551047 is about 3542.7456866109. The cubic root of 12551047 is about 232.3949315216.

Adding to 12551047 its reverse (74015521), we get a palindrome (86566568).

The spelling of 12551047 in words is "twelve million, five hundred fifty-one thousand, forty-seven".