13145205 has 16 divisors (see below), whose sum is σ = 21300480. Its totient is φ = 6921408.

The previous prime is 13145203. The next prime is 13145243. The reversal of 13145205 is 50254131.

It is not a de Polignac number, because 13145205 - 2¹ = 13145203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13145201) 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 in 15 ways as a sum of consecutive naturals, for example, 4362 + ... + 6731.

It is an arithmetic number, because the mean of its divisors is an integer number (1331280).

Almost surely, 2^13145205 is an apocalyptic number.

13145205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13145205 is a deficient number, since it is larger than the sum of its proper divisors (8155275).

13145205 is a wasteful number, since it uses less digits than its factorization.

13145205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11180.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 13145205 is about 3625.6316691026. The cubic root of 13145205 is about 236.0056795052.

Adding to 13145205 its reverse (50254131), we get a palindrome (63399336).

The spelling of 13145205 in words is "thirteen million, one hundred forty-five thousand, two hundred five".