75009 has 8 divisors (see below), whose sum is σ = 109152. Its totient is φ = 45440.

The previous prime is 74959. The next prime is 75011. The reversal of 75009 is 90057.

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

It is a cyclic number.

It is not a de Polignac number, because 75009 - 2¹² = 70913 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1104 + ... + 1169.

It is an arithmetic number, because the mean of its divisors is an integer number (13644).

2⁷⁵⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

75009 is a deficient number, since it is larger than the sum of its proper divisors (34143).

75009 is a wasteful number, since it uses less digits than its factorization.

75009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2287.

The product of its (nonzero) digits is 315, while the sum is 21.

The square root of 75009 is about 273.8777099364. The cubic root of 75009 is about 42.1733200629.

The spelling of 75009 in words is "seventy-five thousand, nine".