441561 has 8 divisors (see below), whose sum is σ = 594880. Its totient is φ = 291312.

The previous prime is 441557. The next prime is 441563. The reversal of 441561 is 165144.

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

It is not a de Polignac number, because 441561 - 2² = 441557 is a prime.

It is a super-2 number, since 2×441561² = 389952233442, which contains 22 as substring.

It is the 665-th Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (441563) by changing a digit.

It is a nontrivial repunit in base 664.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 406 + ... + 1023.

It is an arithmetic number, because the mean of its divisors is an integer number (74360).

2⁴⁴¹⁵⁶¹ is an apocalyptic number.

It is an amenable number.

441561 is a deficient number, since it is larger than the sum of its proper divisors (153319).

441561 is a wasteful number, since it uses less digits than its factorization.

441561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535.

The product of its digits is 480, while the sum is 21.

The square root of 441561 is about 664.5005643338. The cubic root of 441561 is about 76.1488886447.

The spelling of 441561 in words is "four hundred forty-one thousand, five hundred sixty-one".