13152509 has 8 divisors (see below), whose sum is σ = 14084280. Its totient is φ = 12238336.

The previous prime is 13152497. The next prime is 13152511. The reversal of 13152509 is 90525131.

13152509 is nontrivially palindromic in base 11.

It can be written as a sum of positive squares in 4 ways, for example, as 120409 + 13032100 = 347^2 + 3610^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13152509 - 2⁴ = 13152493 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 (13152599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2834 + ... + 5859.

It is an arithmetic number, because the mean of its divisors is an integer number (1760535).

Almost surely, 2^13152509 is an apocalyptic number.

It is an amenable number.

13152509 is a deficient number, since it is larger than the sum of its proper divisors (931771).

13152509 is an equidigital number, since it uses as much as digits as its factorization.

13152509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8799.

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 13152509 is about 3626.6388019763. The cubic root of 13152509 is about 236.0493828001.

The spelling of 13152509 in words is "thirteen million, one hundred fifty-two thousand, five hundred nine".