12945497 has 4 divisors (see below), whose sum is σ = 12953316. Its totient is φ = 12937680.

The previous prime is 12945469. The next prime is 12945511. The reversal of 12945497 is 79454921.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2343961 + 10601536 = 1531^2 + 3256^2 .

It is a cyclic number.

It is not a de Polignac number, because 12945497 - 2⁸ = 12945241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12945437) 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, 338 + ... + 5099.

It is an arithmetic number, because the mean of its divisors is an integer number (3238329).

Almost surely, 2^12945497 is an apocalyptic number.

It is an amenable number.

12945497 is a deficient number, since it is larger than the sum of its proper divisors (7819).

12945497 is an equidigital number, since it uses as much as digits as its factorization.

12945497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7818.

The product of its digits is 90720, while the sum is 41.

The square root of 12945497 is about 3597.9851305974. The cubic root of 12945497 is about 234.8044064368.

The spelling of 12945497 in words is "twelve million, nine hundred forty-five thousand, four hundred ninety-seven".