441632561 has 16 divisors (see below), whose sum is σ = 485923200. Its totient is φ = 399748608.

The previous prime is 441632557. The next prime is 441632563. The reversal of 441632561 is 165236144.

It is a cyclic number.

It is not a de Polignac number, because 441632561 - 2² = 441632557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (441632563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49316 + ... + 57578.

It is an arithmetic number, because the mean of its divisors is an integer number (30370200).

Almost surely, 2^441632561 is an apocalyptic number.

It is an amenable number.

441632561 is a deficient number, since it is larger than the sum of its proper divisors (44290639).

441632561 is a wasteful number, since it uses less digits than its factorization.

441632561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8408.

The product of its digits is 17280, while the sum is 32.

The square root of 441632561 is about 21015.0555792746. The cubic root of 441632561 is about 761.5300207879.

The spelling of 441632561 in words is "four hundred forty-one million, six hundred thirty-two thousand, five hundred sixty-one".