13220553 has 8 divisors (see below), whose sum is σ = 17667808. Its totient is φ = 8793504.

The previous prime is 13220551. The next prime is 13220567. The reversal of 13220553 is 35502231.

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

It is not a de Polignac number, because 13220553 - 2¹ = 13220551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13220551) 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 7 ways as a sum of consecutive naturals, for example, 3451 + ... + 6192.

It is an arithmetic number, because the mean of its divisors is an integer number (2208476).

Almost surely, 2^13220553 is an apocalyptic number.

It is an amenable number.

13220553 is a deficient number, since it is larger than the sum of its proper divisors (4447255).

13220553 is an equidigital number, since it uses as much as digits as its factorization.

13220553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10103.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 13220553 is about 3636.0078382754. The cubic root of 13220553 is about 236.4557469716.

Adding to 13220553 its reverse (35502231), we get a palindrome (48722784).

The spelling of 13220553 in words is "thirteen million, two hundred twenty thousand, five hundred fifty-three".