75385 has 4 divisors (see below), whose sum is σ = 90468. Its totient is φ = 60304.

The previous prime is 75377. The next prime is 75389. The reversal of 75385 is 58357.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11881 + 63504 = 109^2 + 252^2 .

It is a cyclic number.

It is not a de Polignac number, because 75385 - 2³ = 75377 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (75389) 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, 7534 + ... + 7543.

It is an arithmetic number, because the mean of its divisors is an integer number (22617).

2⁷⁵³⁸⁵ is an apocalyptic number.

It is an amenable number.

75385 is a deficient number, since it is larger than the sum of its proper divisors (15083).

75385 is a wasteful number, since it uses less digits than its factorization.

75385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15082.

The product of its digits is 4200, while the sum is 28.

The square root of 75385 is about 274.5632896073. The cubic root of 75385 is about 42.2436704919.

Subtracting from 75385 its sum of digits (28), we obtain a palindrome (75357).

It can be divided in two parts, 753 and 85, that added together give a palindrome (838).

The spelling of 75385 in words is "seventy-five thousand, three hundred eighty-five".