13275009 has 40 divisors (see below), whose sum is σ = 22163328. Its totient is φ = 7849440.

The previous prime is 13275007. The next prime is 13275013. The reversal of 13275009 is 90057231.

It is not a de Polignac number, because 13275009 - 2¹ = 13275007 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (13275007) 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 39 ways as a sum of consecutive naturals, for example, 41719 + ... + 42035.

Almost surely, 2^13275009 is an apocalyptic number.

It is an amenable number.

13275009 is a deficient number, since it is larger than the sum of its proper divisors (8888319).

13275009 is a wasteful number, since it uses less digits than its factorization.

13275009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387 (or 378 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 13275009 is about 3643.4885755276. The cubic root of 13275009 is about 236.7799592034.

It can be divided in two parts, 1327 and 5009, that added together give a palindrome (6336).

The spelling of 13275009 in words is "thirteen million, two hundred seventy-five thousand, nine".