13512985 has 16 divisors (see below), whose sum is σ = 17191440. Its totient is φ = 10178560.

The previous prime is 13512979. The next prime is 13512991. The reversal of 13512985 is 58921531.

It is an interprime number because it is at equal distance from previous prime (13512979) and next prime (13512991).

It can be written as a sum of positive squares in 8 ways, for example, as 183184 + 13329801 = 428^2 + 3651^2 .

It is not a de Polignac number, because 13512985 - 2⁵ = 13512953 is a prime.

It is a super-2 number, since 2×13512985² = 365201527220450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13512985.

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 15 ways as a sum of consecutive naturals, for example, 4809 + ... + 7081.

It is an arithmetic number, because the mean of its divisors is an integer number (1074465).

Almost surely, 2^13512985 is an apocalyptic number.

It is an amenable number.

13512985 is a deficient number, since it is larger than the sum of its proper divisors (3678455).

13512985 is a wasteful number, since it uses less digits than its factorization.

13512985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2348.

The product of its digits is 10800, while the sum is 34.

The square root of 13512985 is about 3676.0012241565. The cubic root of 13512985 is about 238.1864755637.

The spelling of 13512985 in words is "thirteen million, five hundred twelve thousand, nine hundred eighty-five".