13012521 has 8 divisors (see below), whose sum is σ = 17368224. Its totient is φ = 8665920.

The previous prime is 13012499. The next prime is 13012523. The reversal of 13012521 is 12521031.

13012521 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 13012521 - 2⁷ = 13012393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13012521.

It is not an unprimeable number, because it can be changed into a prime (13012523) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2490 + ... + 5676.

It is an arithmetic number, because the mean of its divisors is an integer number (2171028).

Almost surely, 2^13012521 is an apocalyptic number.

It is an amenable number.

13012521 is a deficient number, since it is larger than the sum of its proper divisors (4355703).

13012521 is a wasteful number, since it uses less digits than its factorization.

13012521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4551.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 13012521 is about 3607.2872078613. The cubic root of 13012521 is about 235.2089344505.

Adding to 13012521 its reverse (12521031), we get a palindrome (25533552).

The spelling of 13012521 in words is "thirteen million, twelve thousand, five hundred twenty-one".