75039 has 4 divisors (see below), whose sum is σ = 100056. Its totient is φ = 50024.

The previous prime is 75037. The next prime is 75041. The reversal of 75039 is 93057.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93057 = 3 ⋅31019.

It is an interprime number because it is at equal distance from previous prime (75037) and next prime (75041).

It is a cyclic number.

It is not a de Polignac number, because 75039 - 2¹ = 75037 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75037) 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, 12504 + ... + 12509.

It is an arithmetic number, because the mean of its divisors is an integer number (25014).

2⁷⁵⁰³⁹ is an apocalyptic number.

75039 is a deficient number, since it is larger than the sum of its proper divisors (25017).

75039 is a wasteful number, since it uses less digits than its factorization.

75039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25016.

The product of its (nonzero) digits is 945, while the sum is 24.

The square root of 75039 is about 273.9324734310. The cubic root of 75039 is about 42.1789417482.

The spelling of 75039 in words is "seventy-five thousand, thirty-nine".