450903 has 4 divisors (see below), whose sum is σ = 601208. Its totient is φ = 300600.

The previous prime is 450899. The next prime is 450913. The reversal of 450903 is 309054.

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

It is not a de Polignac number, because 450903 - 2² = 450899 is a prime.

It is a D-number.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 450903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75148 + ... + 75153.

It is an arithmetic number, because the mean of its divisors is an integer number (150302).

2⁴⁵⁰⁹⁰³ is an apocalyptic number.

450903 is a deficient number, since it is larger than the sum of its proper divisors (150305).

450903 is a wasteful number, since it uses less digits than its factorization.

450903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150304.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 450903 is about 671.4931123995. The cubic root of 450903 is about 76.6821665784.

Adding to 450903 its reverse (309054), we get a palindrome (759957).

The spelling of 450903 in words is "four hundred fifty thousand, nine hundred three".