13152785 has 4 divisors (see below), whose sum is σ = 15783348. Its totient is φ = 10522224.

The previous prime is 13152779. The next prime is 13152787. The reversal of 13152785 is 58725131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58725131 = 107 ⋅548833.

It can be written as a sum of positive squares in 2 ways, for example, as 10163344 + 2989441 = 3188^2 + 1729^2 .

It is a cyclic number.

It is not a de Polignac number, because 13152785 - 2⁶ = 13152721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13152787) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1315274 + ... + 1315283.

It is an arithmetic number, because the mean of its divisors is an integer number (3945837).

Almost surely, 2^13152785 is an apocalyptic number.

It is an amenable number.

13152785 is a deficient number, since it is larger than the sum of its proper divisors (2630563).

13152785 is an equidigital number, since it uses as much as digits as its factorization.

13152785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2630562.

The product of its digits is 8400, while the sum is 32.

The square root of 13152785 is about 3626.6768535396. The cubic root of 13152785 is about 236.0510339217.

The spelling of 13152785 in words is "thirteen million, one hundred fifty-two thousand, seven hundred eighty-five".