445332303 has 16 divisors (see below), whose sum is σ = 710502240. Its totient is φ = 274050432.

The previous prime is 445332299. The next prime is 445332319. The reversal of 445332303 is 303233544.

It is a happy number.

It is not a de Polignac number, because 445332303 - 2² = 445332299 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445332373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 634026 + ... + 634727.

It is an arithmetic number, because the mean of its divisors is an integer number (44406390).

Almost surely, 2^445332303 is an apocalyptic number.

445332303 is a deficient number, since it is larger than the sum of its proper divisors (265169937).

445332303 is a wasteful number, since it uses less digits than its factorization.

445332303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1268775 (or 1268769 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 27.

The square root of 445332303 is about 21102.8979763444. The cubic root of 445332303 is about 763.6506625221.

Adding to 445332303 its reverse (303233544), we get a palindrome (748565847).

The spelling of 445332303 in words is "four hundred forty-five million, three hundred thirty-two thousand, three hundred three".