13520413 has 4 divisors (see below), whose sum is σ = 13646880. Its totient is φ = 13393948.

The previous prime is 13520411. The next prime is 13520417. The reversal of 13520413 is 31402531.

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: 31402531 = 4519 ⋅6949.

It is a cyclic number.

It is not a de Polignac number, because 13520413 - 2¹ = 13520411 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 (13520411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63073 + ... + 63286.

It is an arithmetic number, because the mean of its divisors is an integer number (3411720).

Almost surely, 2^13520413 is an apocalyptic number.

It is an amenable number.

13520413 is a deficient number, since it is larger than the sum of its proper divisors (126467).

13520413 is a wasteful number, since it uses less digits than its factorization.

13520413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126466.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 13520413 is about 3677.0114223374. The cubic root of 13520413 is about 238.2301107551.

Adding to 13520413 its reverse (31402531), we get a palindrome (44922944).

The spelling of 13520413 in words is "thirteen million, five hundred twenty thousand, four hundred thirteen".