13540507 has 4 divisors (see below), whose sum is σ = 13551280. Its totient is φ = 13529736.

The previous prime is 13540489. The next prime is 13540511. The reversal of 13540507 is 70504531.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 70504531 = 6089 ⋅11579.

It is a cyclic number.

It is not a de Polignac number, because 13540507 - 2⁷ = 13540379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13540577) 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, 3207 + ... + 6112.

It is an arithmetic number, because the mean of its divisors is an integer number (3387820).

Almost surely, 2^13540507 is an apocalyptic number.

13540507 is a deficient number, since it is larger than the sum of its proper divisors (10773).

13540507 is an equidigital number, since it uses as much as digits as its factorization.

13540507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10772.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 13540507 is about 3679.7427899243. The cubic root of 13540507 is about 238.3480713117.

The spelling of 13540507 in words is "thirteen million, five hundred forty thousand, five hundred seven".