445143303 has 16 divisors (see below), whose sum is σ = 719424000. Its totient is φ = 269783640.

The previous prime is 445143289. The next prime is 445143313. The reversal of 445143303 is 303341544.

It is not a de Polignac number, because 445143303 - 2⁴ = 445143287 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 (445143313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 749103 + ... + 749696.

It is an arithmetic number, because the mean of its divisors is an integer number (44964000).

Almost surely, 2^445143303 is an apocalyptic number.

445143303 is a deficient number, since it is larger than the sum of its proper divisors (274280697).

445143303 is a wasteful number, since it uses less digits than its factorization.

445143303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1498819 (or 1498813 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 445143303 is about 21098.4194431716. The cubic root of 445143303 is about 763.5426155671.

Adding to 445143303 its reverse (303341544), we get a palindrome (748484847).

The spelling of 445143303 in words is "four hundred forty-five million, one hundred forty-three thousand, three hundred three".