75443 has 4 divisors (see below), whose sum is σ = 77520. Its totient is φ = 73368.

The previous prime is 75437. The next prime is 75479. The reversal of 75443 is 34457.

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

It is a cyclic number.

It is not a de Polignac number, because 75443 - 2¹⁰ = 74419 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75403) 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, 983 + ... + 1056.

It is an arithmetic number, because the mean of its divisors is an integer number (19380).

2⁷⁵⁴⁴³ is an apocalyptic number.

75443 is a deficient number, since it is larger than the sum of its proper divisors (2077).

75443 is a wasteful number, since it uses less digits than its factorization.

75443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2076.

The product of its digits is 1680, while the sum is 23.

The square root of 75443 is about 274.6688915767. The cubic root of 75443 is about 42.2545015803.

Adding to 75443 its sum of digits (23), we get a triangular number (75466 = T₃₈₈).

It can be divided in two parts, 754 and 43, that added together give a palindrome (797).

The spelling of 75443 in words is "seventy-five thousand, four hundred forty-three".