12543453 has 12 divisors (see below), whose sum is σ = 19512220. Its totient is φ = 7718976.

The previous prime is 12543449. The next prime is 12543463. The reversal of 12543453 is 35434521.

It can be written as a sum of positive squares in 2 ways, for example, as 558009 + 11985444 = 747^2 + 3462^2 .

It is not a de Polignac number, because 12543453 - 2² = 12543449 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12543413) 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 11 ways as a sum of consecutive naturals, for example, 53488 + ... + 53721.

Almost surely, 2^12543453 is an apocalyptic number.

12543453 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12543453 is a deficient number, since it is larger than the sum of its proper divisors (6968767).

12543453 is a wasteful number, since it uses less digits than its factorization.

12543453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107228 (or 107225 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 12543453 is about 3541.6737568556. The cubic root of 12543453 is about 232.3480519489.

Adding to 12543453 its reverse (35434521), we get a palindrome (47977974).

It can be divided in two parts, 12543 and 453, that added together give a square (12996 = 114²).

The spelling of 12543453 in words is "twelve million, five hundred forty-three thousand, four hundred fifty-three".