445681303 has 2 divisors, whose sum is σ = 445681304. Its totient is φ = 445681302.

The previous prime is 445681297. The next prime is 445681319. The reversal of 445681303 is 303186544.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 445681303 - 2²¹ = 443584151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445681363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222840651 + 222840652.

It is an arithmetic number, because the mean of its divisors is an integer number (222840652).

Almost surely, 2^445681303 is an apocalyptic number.

445681303 is a deficient number, since it is larger than the sum of its proper divisors (1).

445681303 is an equidigital number, since it uses as much as digits as its factorization.

445681303 is an evil number, because the sum of its binary digits is even.

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

The square root of 445681303 is about 21111.1653633806. The cubic root of 445681303 is about 763.8500974825.

The spelling of 445681303 in words is "four hundred forty-five million, six hundred eighty-one thousand, three hundred three".