13132505 has 24 divisors (see below), whose sum is σ = 17062920. Its totient is φ = 9685760.

The previous prime is 13132489. The next prime is 13132513. The reversal of 13132505 is 50523131.

It can be written as a sum of positive squares in 4 ways, for example, as 35344 + 13097161 = 188^2 + 3619^2 .

It is not a de Polignac number, because 13132505 - 2⁴ = 13132489 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 279392 + ... + 279438.

It is an arithmetic number, because the mean of its divisors is an integer number (710955).

Almost surely, 2^13132505 is an apocalyptic number.

It is an amenable number.

13132505 is a deficient number, since it is larger than the sum of its proper divisors (3930415).

13132505 is an equidigital number, since it uses as much as digits as its factorization.

13132505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 13132505 is about 3623.8798269258. The cubic root of 13132505 is about 235.9296508214.

Adding to 13132505 its reverse (50523131), we get a palindrome (63655636).

The spelling of 13132505 in words is "thirteen million, one hundred thirty-two thousand, five hundred five".