13521422 has 4 divisors (see below), whose sum is σ = 20282136. Its totient is φ = 6760710.

The previous prime is 13521421. The next prime is 13521437. The reversal of 13521422 is 22412531.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 13521394 and 13521403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13521421) 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 as a sum of consecutive naturals, namely, 3380354 + ... + 3380357.

It is an arithmetic number, because the mean of its divisors is an integer number (5070534).

Almost surely, 2^13521422 is an apocalyptic number.

13521422 is a deficient number, since it is larger than the sum of its proper divisors (6760714).

13521422 is an equidigital number, since it uses as much as digits as its factorization.

13521422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6760713.

The product of its digits is 480, while the sum is 20.

The square root of 13521422 is about 3677.1486235941. The cubic root of 13521422 is about 238.2360368118.

Adding to 13521422 its reverse (22412531), we get a palindrome (35933953).

The spelling of 13521422 in words is "thirteen million, five hundred twenty-one thousand, four hundred twenty-two".