75045 has 8 divisors (see below), whose sum is σ = 120096. Its totient is φ = 40016.

The previous prime is 75041. The next prime is 75079. The reversal of 75045 is 54057.

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 75045 - 2² = 75041 is a prime.

It is a Curzon number.

It is a plaindrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2487 + ... + 2516.

It is an arithmetic number, because the mean of its divisors is an integer number (15012).

2⁷⁵⁰⁴⁵ is an apocalyptic number.

It is an amenable number.

75045 is a deficient number, since it is larger than the sum of its proper divisors (45051).

75045 is a wasteful number, since it uses less digits than its factorization.

75045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5011.

The product of its (nonzero) digits is 700, while the sum is 21.

The square root of 75045 is about 273.9434248161. The cubic root of 75045 is about 42.1800659054.

The spelling of 75045 in words is "seventy-five thousand, forty-five".