6563255503 has 4 divisors (see below), whose sum is σ = 7500863440. Its totient is φ = 5625647568.

The previous prime is 6563255483. The next prime is 6563255513. The reversal of 6563255503 is 3055523656.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6563255503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6563255513) 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, 468803958 + ... + 468803971.

It is an arithmetic number, because the mean of its divisors is an integer number (1875215860).

Almost surely, 2^6563255503 is an apocalyptic number.

6563255503 is a deficient number, since it is larger than the sum of its proper divisors (937607937).

6563255503 is an equidigital number, since it uses as much as digits as its factorization.

6563255503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 937607936.

The product of its (nonzero) digits is 405000, while the sum is 40.

The square root of 6563255503 is about 81013.9216616502. The cubic root of 6563255503 is about 1872.2899399595.

The spelling of 6563255503 in words is "six billion, five hundred sixty-three million, two hundred fifty-five thousand, five hundred three".