445003 has 4 divisors (see below), whose sum is σ = 479248. Its totient is φ = 410760.

The previous prime is 445001. The next prime is 445019. The reversal of 445003 is 300544.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 445003 - 2¹ = 445001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17103 + ... + 17128.

It is an arithmetic number, because the mean of its divisors is an integer number (119812).

2⁴⁴⁵⁰⁰³ is an apocalyptic number.

445003 is a deficient number, since it is larger than the sum of its proper divisors (34245).

445003 is a wasteful number, since it uses less digits than its factorization.

445003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34244.

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 445003 is about 667.0854517976. The cubic root of 445003 is about 76.3462387787.

Adding to 445003 its reverse (300544), we get a palindrome (745547).

The spelling of 445003 in words is "four hundred forty-five thousand, three".