441181561 has 8 divisors (see below), whose sum is σ = 461136384. Its totient is φ = 421291200.

The previous prime is 441181549. The next prime is 441181597. The reversal of 441181561 is 165181144.

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 441181561 - 2⁹ = 441181049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (441181261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1840 + ... + 29761.

It is an arithmetic number, because the mean of its divisors is an integer number (57642048).

Almost surely, 2^441181561 is an apocalyptic number.

It is an amenable number.

441181561 is a deficient number, since it is larger than the sum of its proper divisors (19954823).

441181561 is a wasteful number, since it uses less digits than its factorization.

441181561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32231.

The product of its digits is 3840, while the sum is 31.

The square root of 441181561 is about 21004.3224361082. The cubic root of 441181561 is about 761.2707049012.

The spelling of 441181561 in words is "four hundred forty-one million, one hundred eighty-one thousand, five hundred sixty-one".