441540561 has 32 divisors (see below), whose sum is σ = 735740928. Its totient is φ = 228824640.

The previous prime is 441540511. The next prime is 441540569. The reversal of 441540561 is 165045144.

It is not a de Polignac number, because 441540561 - 2¹³ = 441532369 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (441540569) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 105831 + ... + 109923.

It is an arithmetic number, because the mean of its divisors is an integer number (22991904).

Almost surely, 2^441540561 is an apocalyptic number.

It is an amenable number.

441540561 is a deficient number, since it is larger than the sum of its proper divisors (294200367).

441540561 is a wasteful number, since it uses less digits than its factorization.

441540561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4581.

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 441540561 is about 21012.8665583732. The cubic root of 441540561 is about 761.4771369853.

The spelling of 441540561 in words is "four hundred forty-one million, five hundred forty thousand, five hundred sixty-one".