13333145 has 12 divisors (see below), whose sum is σ = 18612324. Its totient is φ = 9142560.

The previous prime is 13333121. The next prime is 13333147. The reversal of 13333145 is 54133331.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8684809 + 4648336 = 2947^2 + 2156^2 .

It is not a de Polignac number, because 13333145 - 2⁶ = 13333081 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13333145.

It is not an unprimeable number, because it can be changed into a prime (13333147) 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 11 ways as a sum of consecutive naturals, for example, 26966 + ... + 27455.

It is an arithmetic number, because the mean of its divisors is an integer number (1551027).

Almost surely, 2^13333145 is an apocalyptic number.

It is an amenable number.

13333145 is a deficient number, since it is larger than the sum of its proper divisors (5279179).

13333145 is an equidigital number, since it uses as much as digits as its factorization.

13333145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54440 (or 54433 counting only the distinct ones).

The product of its digits is 1620, while the sum is 23.

The square root of 13333145 is about 3651.4579280063. The cubic root of 13333145 is about 237.1251038248.

Adding to 13333145 its reverse (54133331), we get a palindrome (67466476).

The spelling of 13333145 in words is "thirteen million, three hundred thirty-three thousand, one hundred forty-five".