581801 has 8 divisors (see below), whose sum is σ = 640224. Its totient is φ = 524320.

The previous prime is 581797. The next prime is 581809. The reversal of 581801 is 108185.

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

It is a cyclic number.

It is not a de Polignac number, because 581801 - 2² = 581797 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (581809) 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, 2381 + ... + 2613.

It is an arithmetic number, because the mean of its divisors is an integer number (80028).

2⁵⁸¹⁸⁰¹ is an apocalyptic number.

It is an amenable number.

581801 is a deficient number, since it is larger than the sum of its proper divisors (58423).

581801 is a wasteful number, since it uses less digits than its factorization.

581801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471.

The product of its (nonzero) digits is 320, while the sum is 23.

The square root of 581801 is about 762.7588085365. The cubic root of 581801 is about 83.4817391074.

Adding to 581801 its reverse (108185), we get a palindrome (689986).

The spelling of 581801 in words is "five hundred eighty-one thousand, eight hundred one".