12753445 has 4 divisors (see below), whose sum is σ = 15304140. Its totient is φ = 10202752.

The previous prime is 12753439. The next prime is 12753449. The reversal of 12753445 is 54435721.

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 8567329 + 4186116 = 2927^2 + 2046^2 .

It is a cyclic number.

It is not a de Polignac number, because 12753445 - 2⁷ = 12753317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12753449) 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, 1275340 + ... + 1275349.

It is an arithmetic number, because the mean of its divisors is an integer number (3826035).

Almost surely, 2^12753445 is an apocalyptic number.

It is an amenable number.

12753445 is a deficient number, since it is larger than the sum of its proper divisors (2550695).

12753445 is an equidigital number, since it uses as much as digits as its factorization.

12753445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2550694.

The product of its digits is 16800, while the sum is 31.

The square root of 12753445 is about 3571.1965781794. The cubic root of 12753445 is about 233.6374752713.

The spelling of 12753445 in words is "twelve million, seven hundred fifty-three thousand, four hundred forty-five".