104591 has 4 divisors (see below), whose sum is σ = 107184. Its totient is φ = 102000.

The previous prime is 104579. The next prime is 104593. The reversal of 104591 is 195401.

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 104591 - 2⁶ = 104527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104593) 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, 1235 + ... + 1316.

It is an arithmetic number, because the mean of its divisors is an integer number (26796).

2¹⁰⁴⁵⁹¹ is an apocalyptic number.

104591 is a deficient number, since it is larger than the sum of its proper divisors (2593).

104591 is an equidigital number, since it uses as much as digits as its factorization.

104591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2592.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 104591 is about 323.4053184473. The cubic root of 104591 is about 47.1156049584.

Adding to 104591 its reverse (195401), we get a palindrome (299992).

The spelling of 104591 in words is "one hundred four thousand, five hundred ninety-one".