581056 has 28 divisors (see below), whose sum is σ = 1318768. Its totient is φ = 248832.

The previous prime is 581047. The next prime is 581069. The reversal of 581056 is 650185.

It is a tau number, because it is divible by the number of its divisors (28).

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 581056.

It is a congruent number.

It is an unprimeable number.

581056 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, 201 + ... + 1096.

2⁵⁸¹⁰⁵⁶ is an apocalyptic number.

581056 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

581056 is an abundant number, since it is smaller than the sum of its proper divisors (737712).

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

581056 is a wasteful number, since it uses less digits than its factorization.

581056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316 (or 1306 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 581056 is about 762.2702932687. The cubic root of 581056 is about 83.4460909155.

The spelling of 581056 in words is "five hundred eighty-one thousand, fifty-six".