45503 has 2 divisors, whose sum is σ = 45504. Its totient is φ = 45502.

The previous prime is 45497. The next prime is 45523. The reversal of 45503 is 30554.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45503 - 2⁶ = 45439 is a prime.

It is a plaindrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45523) 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 as a sum of consecutive naturals, namely, 22751 + 22752.

It is an arithmetic number, because the mean of its divisors is an integer number (22752).

2⁴⁵⁵⁰³ is an apocalyptic number.

45503 is a deficient number, since it is larger than the sum of its proper divisors (1).

45503 is an equidigital number, since it uses as much as digits as its factorization.

45503 is an odious number, because the sum of its binary digits is odd.

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

The square root of 45503 is about 213.3143220696. The cubic root of 45503 is about 35.7009695118.

The spelling of 45503 in words is "forty-five thousand, five hundred three".