805541 has 8 divisors (see below), whose sum is σ = 892704. Its totient is φ = 720720.

The previous prime is 805537. The next prime is 805559. The reversal of 805541 is 145508.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 805541 - 2² = 805537 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 805541.

It is not an unprimeable number, because it can be changed into a prime (805501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191 + ... + 1283.

It is an arithmetic number, because the mean of its divisors is an integer number (111588).

2⁸⁰⁵⁵⁴¹ is an apocalyptic number.

It is an amenable number.

805541 is a deficient number, since it is larger than the sum of its proper divisors (87163).

805541 is a wasteful number, since it uses less digits than its factorization.

805541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 805541 is about 897.5193591227. The cubic root of 805541 is about 93.0456091083.

The spelling of 805541 in words is "eight hundred five thousand, five hundred forty-one".