13503427 has 4 divisors (see below), whose sum is σ = 15432496. Its totient is φ = 11574360.

The previous prime is 13503421. The next prime is 13503437. The reversal of 13503427 is 72430531.

13503427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72430531 = 83 ⋅872657.

It is not a de Polignac number, because 13503427 - 2¹⁹ = 12979139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13503421) 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, 964524 + ... + 964537.

It is an arithmetic number, because the mean of its divisors is an integer number (3858124).

Almost surely, 2^13503427 is an apocalyptic number.

13503427 is a deficient number, since it is larger than the sum of its proper divisors (1929069).

13503427 is an equidigital number, since it uses as much as digits as its factorization.

13503427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1929068.

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

The square root of 13503427 is about 3674.7009402127. The cubic root of 13503427 is about 238.1303043254.

Adding to 13503427 its reverse (72430531), we get a palindrome (85933958).

The spelling of 13503427 in words is "thirteen million, five hundred three thousand, four hundred twenty-seven".