6530143 has 4 divisors (see below), whose sum is σ = 6547320. Its totient is φ = 6512968.

The previous prime is 6530107. The next prime is 6530177. The reversal of 6530143 is 3410356.

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 6530143 - 2¹³ = 6521951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6530443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8005 + ... + 8782.

It is an arithmetic number, because the mean of its divisors is an integer number (1636830).

Almost surely, 2^6530143 is an apocalyptic number.

6530143 is a deficient number, since it is larger than the sum of its proper divisors (17177).

6530143 is a wasteful number, since it uses less digits than its factorization.

6530143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17176.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 6530143 is about 2555.4144477951. The cubic root of 6530143 is about 186.9135978781.

Adding to 6530143 its reverse (3410356), we get a palindrome (9940499).

The spelling of 6530143 in words is "six million, five hundred thirty thousand, one hundred forty-three".