445400201 has 2 divisors, whose sum is σ = 445400202. Its totient is φ = 445400200.

The previous prime is 445400173. The next prime is 445400213. The reversal of 445400201 is 102004544.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 411481225 + 33918976 = 20285^2 + 5824^2 .

It is a cyclic number.

It is not a de Polignac number, because 445400201 - 2¹⁰ = 445399177 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (445400251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222700100 + 222700101.

It is an arithmetic number, because the mean of its divisors is an integer number (222700101).

Almost surely, 2^445400201 is an apocalyptic number.

It is an amenable number.

445400201 is a deficient number, since it is larger than the sum of its proper divisors (1).

445400201 is an equidigital number, since it uses as much as digits as its factorization.

445400201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 445400201 is about 21104.5066514240. The cubic root of 445400201 is about 763.6894707839.

Adding to 445400201 its reverse (102004544), we get a palindrome (547404745).

The spelling of 445400201 in words is "four hundred forty-five million, four hundred thousand, two hundred one".