12507453 has 64 divisors (see below), whose sum is σ = 23091200. Its totient is φ = 6613488.

The previous prime is 12507449. The next prime is 12507457. The reversal of 12507453 is 35470521.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12507449) and next prime (12507457).

It is not a de Polignac number, because 12507453 - 2² = 12507449 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12507457) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 290850 + ... + 290892.

It is an arithmetic number, because the mean of its divisors is an integer number (360800).

Almost surely, 2^12507453 is an apocalyptic number.

It is an amenable number.

12507453 is a deficient number, since it is larger than the sum of its proper divisors (10583747).

12507453 is an frugal number, since it uses more digits than its factorization.

12507453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90 (or 72 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 12507453 is about 3536.5877622364. The cubic root of 12507453 is about 232.1255575319.

Adding to 12507453 its reverse (35470521), we get a palindrome (47977974).

The spelling of 12507453 in words is "twelve million, five hundred seven thousand, four hundred fifty-three".