13530013 has 4 divisors (see below), whose sum is σ = 15462880. Its totient is φ = 11597148.

The previous prime is 13529987. The next prime is 13530017. The reversal of 13530013 is 31003531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13530013 is a prime.

It is a super-2 number, since 2×13530013² = 366122503560338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13530017) 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, 966423 + ... + 966436.

It is an arithmetic number, because the mean of its divisors is an integer number (3865720).

Almost surely, 2^13530013 is an apocalyptic number.

It is an amenable number.

13530013 is a deficient number, since it is larger than the sum of its proper divisors (1932867).

13530013 is an equidigital number, since it uses as much as digits as its factorization.

13530013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1932866.

The product of its (nonzero) digits is 135, while the sum is 16.

The square root of 13530013 is about 3678.3165986630. The cubic root of 13530013 is about 238.2864815180.

Adding to 13530013 its reverse (31003531), we get a palindrome (44533544).

The spelling of 13530013 in words is "thirteen million, five hundred thirty thousand, thirteen".