13145565 has 8 divisors (see below), whose sum is σ = 21032928. Its totient is φ = 7010960.

The previous prime is 13145557. The next prime is 13145597. The reversal of 13145565 is 56554131.

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

It is not a de Polignac number, because 13145565 - 2³ = 13145557 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 438171 + ... + 438200.

It is an arithmetic number, because the mean of its divisors is an integer number (2629116).

Almost surely, 2^13145565 is an apocalyptic number.

13145565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13145565 is a deficient number, since it is larger than the sum of its proper divisors (7887363).

13145565 is an equidigital number, since it uses as much as digits as its factorization.

13145565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 876379.

The product of its digits is 9000, while the sum is 30.

The square root of 13145565 is about 3625.6813152841. The cubic root of 13145565 is about 236.0078339351.

Adding to 13145565 its reverse (56554131), we get a palindrome (69699696).

The spelling of 13145565 in words is "thirteen million, one hundred forty-five thousand, five hundred sixty-five".