6501531244 has 48 divisors (see below), whose sum is σ = 12548390400. Its totient is φ = 2928695616.

The previous prime is 6501531229. The next prime is 6501531247. The reversal of 6501531244 is 4421351056.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (6501531247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 922767 + ... + 929785.

It is an arithmetic number, because the mean of its divisors is an integer number (261424800).

Almost surely, 2^6501531244 is an apocalyptic number.

It is an amenable number.

6501531244 is a deficient number, since it is larger than the sum of its proper divisors (6046859156).

6501531244 is a wasteful number, since it uses less digits than its factorization.

6501531244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7462 (or 7460 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 6501531244 is about 80632.0732959286. The cubic root of 6501531244 is about 1866.4021152438.

The spelling of 6501531244 in words is "six billion, five hundred one million, five hundred thirty-one thousand, two hundred forty-four".