13245553 has 2 divisors, whose sum is σ = 13245554. Its totient is φ = 13245552.

The previous prime is 13245517. The next prime is 13245563. The reversal of 13245553 is 35554231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12616704 + 628849 = 3552^2 + 793^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13245553 is a prime.

It is not a weakly prime, because it can be changed into another prime (13245563) 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, 6622776 + 6622777.

It is an arithmetic number, because the mean of its divisors is an integer number (6622777).

Almost surely, 2^13245553 is an apocalyptic number.

It is an amenable number.

13245553 is a deficient number, since it is larger than the sum of its proper divisors (1).

13245553 is an equidigital number, since it uses as much as digits as its factorization.

13245553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9000, while the sum is 28.

The square root of 13245553 is about 3639.4440509506. Note that the first 3 decimals coincide. The cubic root of 13245553 is about 236.6046986694.

Adding to 13245553 its reverse (35554231), we get a palindrome (48799784).

The spelling of 13245553 in words is "thirteen million, two hundred forty-five thousand, five hundred fifty-three".