45603 has 10 divisors (see below), whose sum is σ = 68244. Its totient is φ = 30348.

The previous prime is 45599. The next prime is 45613. The reversal of 45603 is 30654.

It is a happy number.

It is not a de Polignac number, because 45603 - 2² = 45599 is a prime.

45603 is a lucky number.

It is a plaindrome in base 13.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 45603.

It is not an unprimeable number, because it can be changed into a prime (45613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 201 + ... + 362.

2⁴⁵⁶⁰³ is an apocalyptic number.

45603 is a deficient number, since it is larger than the sum of its proper divisors (22641).

45603 is an equidigital number, since it uses as much as digits as its factorization.

45603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575 (or 566 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 45603 is about 213.5485893187. The cubic root of 45603 is about 35.7271032089.

The spelling of 45603 in words is "forty-five thousand, six hundred three".