445445111 has 2 divisors, whose sum is σ = 445445112. Its totient is φ = 445445110.

The previous prime is 445445081. The next prime is 445445137. The reversal of 445445111 is 111544544.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 445445111 - 2¹⁴ = 445428727 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445445141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222722555 + 222722556.

It is an arithmetic number, because the mean of its divisors is an integer number (222722556).

Almost surely, 2^445445111 is an apocalyptic number.

445445111 is a deficient number, since it is larger than the sum of its proper divisors (1).

445445111 is an equidigital number, since it uses as much as digits as its factorization.

445445111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6400, while the sum is 29.

The square root of 445445111 is about 21105.5706153612. The cubic root of 445445111 is about 763.7151376945.

Adding to 445445111 its reverse (111544544), we get a palindrome (556989655).

The spelling of 445445111 in words is "four hundred forty-five million, four hundred forty-five thousand, one hundred eleven".