441054501581 has 2 divisors, whose sum is σ = 441054501582. Its totient is φ = 441054501580.

The previous prime is 441054501541. The next prime is 441054501583. The reversal of 441054501581 is 185105450144.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 435027308356 + 6027193225 = 659566^2 + 77635^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-441054501581 is a prime.

It is a super-2 number, since 2×441054501581² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 441054501583, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (441054501583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220527250790 + 220527250791.

It is an arithmetic number, because the mean of its divisors is an integer number (220527250791).

Almost surely, 2^441054501581 is an apocalyptic number.

It is an amenable number.

441054501581 is a deficient number, since it is larger than the sum of its proper divisors (1).

441054501581 is an equidigital number, since it uses as much as digits as its factorization.

441054501581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64000, while the sum is 38.

The spelling of 441054501581 in words is "four hundred forty-one billion, fifty-four million, five hundred one thousand, five hundred eighty-one".