12471551 has 4 divisors (see below), whose sum is σ = 12500400. Its totient is φ = 12442704.

The previous prime is 12471533. The next prime is 12471559. The reversal of 12471551 is 15517421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15517421 = 433 ⋅35837.

It is a cyclic number.

It is not a de Polignac number, because 12471551 - 2¹⁰ = 12470527 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12471551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12471559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13766 + ... + 14643.

It is an arithmetic number, because the mean of its divisors is an integer number (3125100).

Almost surely, 2^12471551 is an apocalyptic number.

12471551 is a deficient number, since it is larger than the sum of its proper divisors (28849).

12471551 is an equidigital number, since it uses as much as digits as its factorization.

12471551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28848.

The product of its digits is 1400, while the sum is 26.

The square root of 12471551 is about 3531.5083179854. The cubic root of 12471551 is about 231.9032431941.

Adding to 12471551 its reverse (15517421), we get a palindrome (27988972).

The spelling of 12471551 in words is "twelve million, four hundred seventy-one thousand, five hundred fifty-one".