6506530003 has 4 divisors (see below), whose sum is σ = 6889267080. Its totient is φ = 6123792928.

The previous prime is 6506529979. The next prime is 6506530027. The reversal of 6506530003 is 3000356056.

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

It is an interprime number because it is at equal distance from previous prime (6506529979) and next prime (6506530027).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6506530003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6506530033) 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, 191368513 + ... + 191368546.

It is an arithmetic number, because the mean of its divisors is an integer number (1722316770).

Almost surely, 2^6506530003 is an apocalyptic number.

6506530003 is a deficient number, since it is larger than the sum of its proper divisors (382737077).

6506530003 is a wasteful number, since it uses less digits than its factorization.

6506530003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382737076.

The product of its (nonzero) digits is 8100, while the sum is 28.

The square root of 6506530003 is about 80663.0646764676. The cubic root of 6506530003 is about 1866.8803258872.

Adding to 6506530003 its reverse (3000356056), we get a palindrome (9506886059).

The spelling of 6506530003 in words is "six billion, five hundred six million, five hundred thirty thousand, three".