12471553 has 4 divisors (see below), whose sum is σ = 12808660. Its totient is φ = 12134448.

The previous prime is 12471533. The next prime is 12471559. The reversal of 12471553 is 35517421.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8661249 + 3810304 = 2943^2 + 1952^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12471553 is a prime.

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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168498 + ... + 168571.

It is an arithmetic number, because the mean of its divisors is an integer number (3202165).

Almost surely, 2^12471553 is an apocalyptic number.

It is an amenable number.

12471553 is a deficient number, since it is larger than the sum of its proper divisors (337107).

12471553 is an equidigital number, since it uses as much as digits as its factorization.

12471553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337106.

The product of its digits is 4200, while the sum is 28.

The square root of 12471553 is about 3531.5086011505. The cubic root of 12471553 is about 231.9032555905.

Adding to 12471553 its reverse (35517421), we get a palindrome (47988974).

The spelling of 12471553 in words is "twelve million, four hundred seventy-one thousand, five hundred fifty-three".