6531582245 has 18 divisors (see below), whose sum is σ = 8018638002. Its totient is φ = 5107439616.

The previous prime is 6531582229. The next prime is 6531582247. The reversal of 6531582245 is 5422851356.

It can be written as a sum of positive squares in 3 ways, for example, as 289476196 + 6242106049 = 17014^2 + 79007^2 .

It is not a de Polignac number, because 6531582245 - 2⁴ = 6531582229 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 (6531582247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8493221 + ... + 8493989.

It is an arithmetic number, because the mean of its divisors is an integer number (445479889).

Almost surely, 2^6531582245 is an apocalyptic number.

It is an amenable number.

6531582245 is a deficient number, since it is larger than the sum of its proper divisors (1487055757).

6531582245 is an frugal number, since it uses more digits than its factorization.

6531582245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1637 (or 821 counting only the distinct ones).

The product of its digits is 288000, while the sum is 41.

The square root of 6531582245 is about 80818.2049107749. The cubic root of 6531582245 is about 1869.2732880251.

The spelling of 6531582245 in words is "six billion, five hundred thirty-one million, five hundred eighty-two thousand, two hundred forty-five".