545003 has 4 divisors (see below), whose sum is σ = 577080. Its totient is φ = 512928.

The previous prime is 544979. The next prime is 545023. The reversal of 545003 is 300545.

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 545003 - 2¹² = 540907 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 32059 = 545003 / (5 + 4 + 5 + 0 + 0 + 3).

It is a Duffinian number.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (545023) 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, 16013 + ... + 16046.

It is an arithmetic number, because the mean of its divisors is an integer number (144270).

2⁵⁴⁵⁰⁰³ is an apocalyptic number.

545003 is a deficient number, since it is larger than the sum of its proper divisors (32077).

545003 is a wasteful number, since it uses less digits than its factorization.

545003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32076.

The product of its (nonzero) digits is 300, while the sum is 17.

The square root of 545003 is about 738.2431848653. The cubic root of 545003 is about 81.6832415800.

Adding to 545003 its reverse (300545), we get a palindrome (845548).

The spelling of 545003 in words is "five hundred forty-five thousand, three".