581226 has 16 divisors (see below), whose sum is σ = 1179264. Its totient is φ = 190944.

The previous prime is 581201. The next prime is 581227. The reversal of 581226 is 622185.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 581196 and 581205.

It is not an unprimeable number, because it can be changed into a prime (581227) by changing a digit.

581226 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226 + ... + 1101.

It is an arithmetic number, because the mean of its divisors is an integer number (73704).

2⁵⁸¹²²⁶ is an apocalyptic number.

581226 is an abundant number, since it is smaller than the sum of its proper divisors (598038).

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

581226 is a wasteful number, since it uses less digits than its factorization.

581226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1405.

The product of its digits is 960, while the sum is 24.

The square root of 581226 is about 762.3817941163. The cubic root of 581226 is about 83.4542280843.

The spelling of 581226 in words is "five hundred eighty-one thousand, two hundred twenty-six".