445666201 has 2 divisors, whose sum is σ = 445666202. Its totient is φ = 445666200.

The previous prime is 445666163. The next prime is 445666211. The reversal of 445666201 is 102666544.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 414081801 + 31584400 = 20349^2 + 5620^2 .

It is a cyclic number.

It is not a de Polignac number, because 445666201 - 2¹⁹ = 445141913 is a prime.

It is equal to p_23635375 and since 445666201 and 23635375 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (445666211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222833100 + 222833101.

It is an arithmetic number, because the mean of its divisors is an integer number (222833101).

Almost surely, 2^445666201 is an apocalyptic number.

It is an amenable number.

445666201 is a deficient number, since it is larger than the sum of its proper divisors (1).

445666201 is an equidigital number, since it uses as much as digits as its factorization.

445666201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 445666201 is about 21110.8076823223. The cubic root of 445666201 is about 763.8414696473.

The spelling of 445666201 in words is "four hundred forty-five million, six hundred sixty-six thousand, two hundred one".