441331561 has 8 divisors (see below), whose sum is σ = 482171904. Its totient is φ = 400611120.

The previous prime is 441331559. The next prime is 441331571. The reversal of 441331561 is 165133144.

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 441331561 - 2¹ = 441331559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (441331511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22185 + ... + 37078.

It is an arithmetic number, because the mean of its divisors is an integer number (60271488).

Almost surely, 2^441331561 is an apocalyptic number.

It is an amenable number.

441331561 is a deficient number, since it is larger than the sum of its proper divisors (40840343).

441331561 is a wasteful number, since it uses less digits than its factorization.

441331561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59951.

The product of its digits is 4320, while the sum is 28.

The square root of 441331561 is about 21007.8928262689. The cubic root of 441331561 is about 761.3569714763.

The spelling of 441331561 in words is "four hundred forty-one million, three hundred thirty-one thousand, five hundred sixty-one".