13521541 has 8 divisors (see below), whose sum is σ = 14811264. Its totient is φ = 12241920.

The previous prime is 13521533. The next prime is 13521551. The reversal of 13521541 is 14512531.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13521541 - 2³ = 13521533 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 (13521551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 436 + ... + 5218.

It is an arithmetic number, because the mean of its divisors is an integer number (1851408).

Almost surely, 2^13521541 is an apocalyptic number.

13521541 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13521541 is a deficient number, since it is larger than the sum of its proper divisors (1289723).

13521541 is a wasteful number, since it uses less digits than its factorization.

13521541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5051.

The product of its digits is 600, while the sum is 22.

The square root of 13521541 is about 3677.1648045743. The cubic root of 13521541 is about 238.2367357029.

The spelling of 13521541 in words is "thirteen million, five hundred twenty-one thousand, five hundred forty-one".