6531047 has 4 divisors (see below), whose sum is σ = 6547896. Its totient is φ = 6514200.

The previous prime is 6531029. The next prime is 6531053. The reversal of 6531047 is 7401356.

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 6531047 - 2²⁰ = 5482471 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 (6531097) 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, 7829 + ... + 8622.

It is an arithmetic number, because the mean of its divisors is an integer number (1636974).

Almost surely, 2^6531047 is an apocalyptic number.

6531047 is a deficient number, since it is larger than the sum of its proper divisors (16849).

6531047 is a wasteful number, since it uses less digits than its factorization.

6531047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16848.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 6531047 is about 2555.5913210058. The cubic root of 6531047 is about 186.9222226048.

The spelling of 6531047 in words is "six million, five hundred thirty-one thousand, forty-seven".