13009543 has 8 divisors (see below), whose sum is σ = 13335840. Its totient is φ = 12687360.

The previous prime is 13009517. The next prime is 13009561. The reversal of 13009543 is 34590031.

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 13009543 - 2⁵ = 13009511 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 (13009343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5943 + ... + 7831.

It is an arithmetic number, because the mean of its divisors is an integer number (1666980).

Almost surely, 2^13009543 is an apocalyptic number.

13009543 is a deficient number, since it is larger than the sum of its proper divisors (326297).

13009543 is an equidigital number, since it uses as much as digits as its factorization.

13009543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2057.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 13009543 is about 3606.8744086813. The cubic root of 13009543 is about 235.1909900504.

Adding to 13009543 its reverse (34590031), we get a palindrome (47599574).

The spelling of 13009543 in words is "thirteen million, nine thousand, five hundred forty-three".