13135522 has 4 divisors (see below), whose sum is σ = 19703286. Its totient is φ = 6567760.

The previous prime is 13135519. The next prime is 13135523. The reversal of 13135522 is 22553131.

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

It can be written as a sum of positive squares in only one way, i.e., 7177041 + 5958481 = 2679^2 + 2441^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13135493 and 13135502.

It is not an unprimeable number, because it can be changed into a prime (13135523) 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, 3283879 + ... + 3283882.

Almost surely, 2^13135522 is an apocalyptic number.

13135522 is a deficient number, since it is larger than the sum of its proper divisors (6567764).

13135522 is an equidigital number, since it uses as much as digits as its factorization.

13135522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6567763.

The product of its digits is 900, while the sum is 22.

The square root of 13135522 is about 3624.2960695837. The cubic root of 13135522 is about 235.9477165612.

Adding to 13135522 its reverse (22553131), we get a palindrome (35688653).

It can be divided in two parts, 131 and 35522, that added together give a palindrome (35653).

The spelling of 13135522 in words is "thirteen million, one hundred thirty-five thousand, five hundred twenty-two".