12529997 has 4 divisors (see below), whose sum is σ = 12567516. Its totient is φ = 12492480.

The previous prime is 12529981. The next prime is 12529999. The reversal of 12529997 is 79992521.

It is a happy number.

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 3613801 + 8916196 = 1901^2 + 2986^2 .

It is a cyclic number.

It is not a de Polignac number, because 12529997 - 2⁴ = 12529981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12529999) 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, 18254 + ... + 18927.

It is an arithmetic number, because the mean of its divisors is an integer number (3141879).

Almost surely, 2^12529997 is an apocalyptic number.

It is an amenable number.

12529997 is a deficient number, since it is larger than the sum of its proper divisors (37519).

12529997 is an equidigital number, since it uses as much as digits as its factorization.

12529997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37518.

The product of its digits is 102060, while the sum is 44.

The square root of 12529997 is about 3539.7735803297. The cubic root of 12529997 is about 232.2649383642.

The spelling of 12529997 in words is "twelve million, five hundred twenty-nine thousand, nine hundred ninety-seven".