53503 has 2 divisors, whose sum is σ = 53504. Its totient is φ = 53502.

The previous prime is 53479. The next prime is 53507. The reversal of 53503 is 30535.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53507) 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, 26751 + 26752.

It is an arithmetic number, because the mean of its divisors is an integer number (26752).

2⁵³⁵⁰³ is an apocalyptic number.

53503 is a deficient number, since it is larger than the sum of its proper divisors (1).

53503 is an equidigital number, since it uses as much as digits as its factorization.

53503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 225, while the sum is 16.

The square root of 53503 is about 231.3071550990. The cubic root of 53503 is about 37.6813145143.

The spelling of 53503 in words is "fifty-three thousand, five hundred three".