13306553 has 6 divisors (see below), whose sum is σ = 14409054. Its totient is φ = 12282816.

The previous prime is 13306549. The next prime is 13306583. The reversal of 13306553 is 35560331.

13306553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 824464 + 12482089 = 908^2 + 3533^2 .

It is not a de Polignac number, because 13306553 - 2² = 13306549 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13306543) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39200 + ... + 39537.

It is an arithmetic number, because the mean of its divisors is an integer number (2401509).

Almost surely, 2^13306553 is an apocalyptic number.

13306553 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13306553 is a deficient number, since it is larger than the sum of its proper divisors (1102501).

13306553 is an equidigital number, since it uses as much as digits as its factorization.

13306553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78763 (or 78750 counting only the distinct ones).

The product of its (nonzero) digits is 4050, while the sum is 26.

The square root of 13306553 is about 3647.8148253441. The cubic root of 13306553 is about 236.9673559102.

Adding to 13306553 its reverse (35560331), we get a palindrome (48866884).

The spelling of 13306553 in words is "thirteen million, three hundred six thousand, five hundred fifty-three".