450003 has 4 divisors (see below), whose sum is σ = 600008. Its totient is φ = 300000.

The previous prime is 450001. The next prime is 450011. The reversal of 450003 is 300054.

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

It is not a de Polignac number, because 450003 - 2¹ = 450001 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (450001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74998 + ... + 75003.

It is an arithmetic number, because the mean of its divisors is an integer number (150002).

2⁴⁵⁰⁰⁰³ is an apocalyptic number.

450003 is a deficient number, since it is larger than the sum of its proper divisors (150005).

450003 is a wasteful number, since it uses less digits than its factorization.

450003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150004.

The product of its (nonzero) digits is 60, while the sum is 12.

The square root of 450003 is about 670.8226293142. The cubic root of 450003 is about 76.6311135300.

Adding to 450003 its reverse (300054), we get a palindrome (750057).

The spelling of 450003 in words is "four hundred fifty thousand, three".