13051585 has 4 divisors (see below), whose sum is σ = 15661908. Its totient is φ = 10441264.

The previous prime is 13051561. The next prime is 13051601. The reversal of 13051585 is 58515031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4946176 + 8105409 = 2224^2 + 2847^2 .

It is a cyclic number.

It is not a de Polignac number, because 13051585 - 2⁷ = 13051457 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1305154 + ... + 1305163.

It is an arithmetic number, because the mean of its divisors is an integer number (3915477).

Almost surely, 2^13051585 is an apocalyptic number.

It is an amenable number.

13051585 is a deficient number, since it is larger than the sum of its proper divisors (2610323).

13051585 is an equidigital number, since it uses as much as digits as its factorization.

13051585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2610322.

The product of its (nonzero) digits is 3000, while the sum is 28.

The square root of 13051585 is about 3612.6977454528. The cubic root of 13051585 is about 235.4440675375. Note that the first 3 decimals are identical.

It can be divided in two parts, 130 and 51585, that added together give a palindrome (51715).

The spelling of 13051585 in words is "thirteen million, fifty-one thousand, five hundred eighty-five".