13530427 has 4 divisors (see below), whose sum is σ = 13537800. Its totient is φ = 13523056.

The previous prime is 13530421. The next prime is 13530457. The reversal of 13530427 is 72403531.

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: 72403531 = 179 ⋅404489.

It is a cyclic number.

It is not a de Polignac number, because 13530427 - 2²³ = 5141819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13530421) 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, 1488 + ... + 5410.

It is an arithmetic number, because the mean of its divisors is an integer number (3384450).

Almost surely, 2^13530427 is an apocalyptic number.

13530427 is a deficient number, since it is larger than the sum of its proper divisors (7373).

13530427 is an equidigital number, since it uses as much as digits as its factorization.

13530427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7372.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 13530427 is about 3678.3728739757. The cubic root of 13530427 is about 238.2889119074.

Adding to 13530427 its reverse (72403531), we get a palindrome (85933958).

The spelling of 13530427 in words is "thirteen million, five hundred thirty thousand, four hundred twenty-seven".