12481544 has 8 divisors (see below), whose sum is σ = 23402910. Its totient is φ = 6240768.

The previous prime is 12481541. The next prime is 12481559. The reversal of 12481544 is 44518421.

It can be written as a sum of positive squares in only one way, i.e., 6959044 + 5522500 = 2638^2 + 2350^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×12481544³ (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (12481541) 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 as a sum of consecutive naturals, namely, 780089 + ... + 780104.

Almost surely, 2^12481544 is an apocalyptic number.

It is an amenable number.

12481544 is a deficient number, since it is larger than the sum of its proper divisors (10921366).

12481544 is a wasteful number, since it uses less digits than its factorization.

12481544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1560199 (or 1560195 counting only the distinct ones).

The product of its digits is 5120, while the sum is 29.

The square root of 12481544 is about 3532.9228692401. The cubic root of 12481544 is about 231.9651652018.

Adding to 12481544 its reverse (44518421), we get a palindrome (56999965).

The spelling of 12481544 in words is "twelve million, four hundred eighty-one thousand, five hundred forty-four".