63503 has 8 divisors (see below), whose sum is σ = 72576. Its totient is φ = 55000.

The previous prime is 63499. The next prime is 63521. The reversal of 63503 is 30536.

It is a happy number.

It is a Cunningham number, because it is equal to 252²-1.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 63503 - 2² = 63499 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128 + ... + 378.

It is an arithmetic number, because the mean of its divisors is an integer number (9072).

2⁶³⁵⁰³ is an apocalyptic number.

63503 is a deficient number, since it is larger than the sum of its proper divisors (9073).

63503 is a wasteful number, since it uses less digits than its factorization.

63503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285.

The product of its (nonzero) digits is 270, while the sum is 17.

The square root of 63503 is about 251.9980158652. The cubic root of 63503 is about 39.8961891491.

The spelling of 63503 in words is "sixty-three thousand, five hundred three".