75489 has 4 divisors (see below), whose sum is σ = 100656. Its totient is φ = 50324.

The previous prime is 75479. The next prime is 75503. The reversal of 75489 is 98457.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75489 is a prime.

It is a D-number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 75489.

It is not an unprimeable number, because it can be changed into a prime (75479) 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, 12579 + ... + 12584.

It is an arithmetic number, because the mean of its divisors is an integer number (25164).

2⁷⁵⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

75489 is a deficient number, since it is larger than the sum of its proper divisors (25167).

75489 is a wasteful number, since it uses less digits than its factorization.

75489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25166.

The product of its digits is 10080, while the sum is 33.

The square root of 75489 is about 274.7526160021. The cubic root of 75489 is about 42.2630878072.

It can be divided in two parts, 7548 and 9, that added together give a palindrome (7557).

The spelling of 75489 in words is "seventy-five thousand, four hundred eighty-nine".