12506453 has 4 divisors (see below), whose sum is σ = 12937740. Its totient is φ = 12075168.

The previous prime is 12506449. The next prime is 12506477. The reversal of 12506453 is 35460521.

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 2815684 + 9690769 = 1678^2 + 3113^2 .

It is a cyclic number.

It is not a de Polignac number, because 12506453 - 2² = 12506449 is a prime.

It is a super-2 number, since 2×12506453² = 312822733282418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12508453) 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, 215600 + ... + 215657.

It is an arithmetic number, because the mean of its divisors is an integer number (3234435).

Almost surely, 2^12506453 is an apocalyptic number.

It is an amenable number.

12506453 is a deficient number, since it is larger than the sum of its proper divisors (431287).

12506453 is an equidigital number, since it uses as much as digits as its factorization.

12506453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431286.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 12506453 is about 3536.4463801958. The cubic root of 12506453 is about 232.1193710407.

Adding to 12506453 its reverse (35460521), we get a palindrome (47966974).

The spelling of 12506453 in words is "twelve million, five hundred six thousand, four hundred fifty-three".