441581 has 8 divisors (see below), whose sum is σ = 508800. Its totient is φ = 375408.

The previous prime is 441569. The next prime is 441587. The reversal of 441581 is 185144.

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 441581 - 2⁶ = 441517 is a prime.

It is a super-2 number, since 2×441581² = 389987559122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon 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 441581.

It is not an unprimeable number, because it can be changed into a prime (441587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1235 + ... + 1551.

It is an arithmetic number, because the mean of its divisors is an integer number (63600).

2⁴⁴¹⁵⁸¹ is an apocalyptic number.

It is an amenable number.

441581 is a deficient number, since it is larger than the sum of its proper divisors (67219).

441581 is a wasteful number, since it uses less digits than its factorization.

441581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523.

The product of its digits is 640, while the sum is 23.

The square root of 441581 is about 664.5156130596. The cubic root of 441581 is about 76.1500383195.

The spelling of 441581 in words is "four hundred forty-one thousand, five hundred eighty-one".