581106 has 8 divisors (see below), whose sum is σ = 1162224. Its totient is φ = 193700.

The previous prime is 581101. The next prime is 581137. The reversal of 581106 is 601185.

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

581106 is an admirable number.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (581101) by changing a digit.

581106 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48420 + ... + 48431.

It is an arithmetic number, because the mean of its divisors is an integer number (145278).

2⁵⁸¹¹⁰⁶ is an apocalyptic number.

581106 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

581106 is a wasteful number, since it uses less digits than its factorization.

581106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96856.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 581106 is about 762.3030893286. The cubic root of 581106 is about 83.4484843651.

The spelling of 581106 in words is "five hundred eighty-one thousand, one hundred six".