6572493921 has 24 divisors (see below), whose sum is σ = 10203904704. Its totient is φ = 3752088480.

The previous prime is 6572493883. The next prime is 6572493937. The reversal of 6572493921 is 1293942756.

It is not a de Polignac number, because 6572493921 - 2⁶ = 6572493857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6572493721) 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 23 ways as a sum of consecutive naturals, for example, 135231 + ... + 177291.

It is an arithmetic number, because the mean of its divisors is an integer number (425162696).

Almost surely, 2^6572493921 is an apocalyptic number.

It is an amenable number.

6572493921 is a deficient number, since it is larger than the sum of its proper divisors (3631410783).

6572493921 is a wasteful number, since it uses less digits than its factorization.

6572493921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43141 (or 43134 counting only the distinct ones).

The product of its digits is 816480, while the sum is 48.

The square root of 6572493921 is about 81070.9190832323. The cubic root of 6572493921 is about 1873.1680045969.

The spelling of 6572493921 in words is "six billion, five hundred seventy-two million, four hundred ninety-three thousand, nine hundred twenty-one".