13540413 has 4 divisors (see below), whose sum is σ = 18053888. Its totient is φ = 9026940.

The previous prime is 13540411. The next prime is 13540421. The reversal of 13540413 is 31404531.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31404531 = 3 ⋅10468177.

It is not a de Polignac number, because 13540413 - 2¹ = 13540411 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13540413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13540411) 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, 2256733 + ... + 2256738.

It is an arithmetic number, because the mean of its divisors is an integer number (4513472).

Almost surely, 2^13540413 is an apocalyptic number.

It is an amenable number.

13540413 is a deficient number, since it is larger than the sum of its proper divisors (4513475).

13540413 is an equidigital number, since it uses as much as digits as its factorization.

13540413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4513474.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 13540413 is about 3679.7300172703. The cubic root of 13540413 is about 238.3475197624.

Adding to 13540413 its reverse (31404531), we get a palindrome (44944944).

The spelling of 13540413 in words is "thirteen million, five hundred forty thousand, four hundred thirteen".