13445522 has 4 divisors (see below), whose sum is σ = 20168286. Its totient is φ = 6722760.

The previous prime is 13445519. The next prime is 13445527. The reversal of 13445522 is 22554431.

It is a happy number.

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., 13315201 + 130321 = 3649^2 + 361^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13445491 and 13445500.

It is not an unprimeable number, because it can be changed into a prime (13445527) 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, 3361379 + ... + 3361382.

Almost surely, 2^13445522 is an apocalyptic number.

13445522 is a deficient number, since it is larger than the sum of its proper divisors (6722764).

13445522 is an equidigital number, since it uses as much as digits as its factorization.

13445522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6722763.

The product of its digits is 4800, while the sum is 26.

The square root of 13445522 is about 3666.8136031165. The cubic root of 13445522 is about 237.7894354943.

Adding to 13445522 its reverse (22554431), we get a palindrome (35999953).

The spelling of 13445522 in words is "thirteen million, four hundred forty-five thousand, five hundred twenty-two".