445544401 has 2 divisors, whose sum is σ = 445544402. Its totient is φ = 445544400.

The previous prime is 445544389. The next prime is 445544453. The reversal of 445544401 is 104445544.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 348009025 + 97535376 = 18655^2 + 9876^2 .

It is a cyclic number.

It is not a de Polignac number, because 445544401 - 2⁷ = 445544273 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (445544101) 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 as a sum of consecutive naturals, namely, 222772200 + 222772201.

It is an arithmetic number, because the mean of its divisors is an integer number (222772201).

Almost surely, 2^445544401 is an apocalyptic number.

It is an amenable number.

445544401 is a deficient number, since it is larger than the sum of its proper divisors (1).

445544401 is an equidigital number, since it uses as much as digits as its factorization.

445544401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25600, while the sum is 31.

The square root of 445544401 is about 21107.9227068890. The cubic root of 445544401 is about 763.7718776764.

Adding to 445544401 its reverse (104445544), we get a palindrome (549989945).

The spelling of 445544401 in words is "four hundred forty-five million, five hundred forty-four thousand, four hundred one".