8005506503 has 4 divisors (see below), whose sum is σ = 8009810088. Its totient is φ = 8001202920.

The previous prime is 8005506497. The next prime is 8005506511. The reversal of 8005506503 is 3056055008.

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

It is a cyclic number.

It is not a de Polignac number, because 8005506503 - 2¹⁶ = 8005440967 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8005506503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8005596503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2149001 + ... + 2152722.

It is an arithmetic number, because the mean of its divisors is an integer number (2002452522).

Almost surely, 2^8005506503 is an apocalyptic number.

8005506503 is a deficient number, since it is larger than the sum of its proper divisors (4303585).

8005506503 is a wasteful number, since it uses less digits than its factorization.

8005506503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4303584.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 8005506503 is about 89473.4960924183. The cubic root of 8005506503 is about 2000.4587700070.

The spelling of 8005506503 in words is "eight billion, five million, five hundred six thousand, five hundred three".