75491 has 4 divisors (see below), whose sum is σ = 81312. Its totient is φ = 69672.

The previous prime is 75479. The next prime is 75503. The reversal of 75491 is 19457.

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

It is an interprime number because it is at equal distance from previous prime (75479) and next prime (75503).

It is a cyclic number.

It is not a de Polignac number, because 75491 - 2¹⁴ = 59107 is a prime.

It is a Duffinian number.

It is a plaindrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 75491.

It is not an unprimeable number, because it can be changed into a prime (75401) 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, 2891 + ... + 2916.

It is an arithmetic number, because the mean of its divisors is an integer number (20328).

2⁷⁵⁴⁹¹ is an apocalyptic number.

75491 is a deficient number, since it is larger than the sum of its proper divisors (5821).

75491 is a wasteful number, since it uses less digits than its factorization.

75491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5820.

The product of its digits is 1260, while the sum is 26.

The square root of 75491 is about 274.7562556158. The cubic root of 75491 is about 42.2634610423.

The spelling of 75491 in words is "seventy-five thousand, four hundred ninety-one".