445165601 has 2 divisors, whose sum is σ = 445165602. Its totient is φ = 445165600.

The previous prime is 445165597. The next prime is 445165663. The reversal of 445165601 is 106561544.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 313467025 + 131698576 = 17705^2 + 11476^2 .

It is a cyclic number.

It is not a de Polignac number, because 445165601 - 2² = 445165597 is a prime.

It is not a weakly prime, because it can be changed into another prime (445165001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222582800 + 222582801.

It is an arithmetic number, because the mean of its divisors is an integer number (222582801).

Almost surely, 2^445165601 is an apocalyptic number.

It is an amenable number.

445165601 is a deficient number, since it is larger than the sum of its proper divisors (1).

445165601 is an equidigital number, since it uses as much as digits as its factorization.

445165601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 445165601 is about 21098.9478647633. The cubic root of 445165601 is about 763.5553644121. Note that the first 3 decimals are identical.

The spelling of 445165601 in words is "four hundred forty-five million, one hundred sixty-five thousand, six hundred one".