6646524053 has 4 divisors (see below), whose sum is σ = 7157795148. Its totient is φ = 6135252960.

The previous prime is 6646524047. The next prime is 6646524067. The reversal of 6646524053 is 3504256466.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3504256466 = 2 ⋅1752128233.

It can be written as a sum of positive squares in 2 ways, for example, as 3861006769 + 2785517284 = 62137^2 + 52778^2 .

It is a cyclic number.

It is not a de Polignac number, because 6646524053 - 2⁴ = 6646524037 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6646524053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6646524253) 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, 255635528 + ... + 255635553.

It is an arithmetic number, because the mean of its divisors is an integer number (1789448787).

Almost surely, 2^6646524053 is an apocalyptic number.

It is an amenable number.

6646524053 is a deficient number, since it is larger than the sum of its proper divisors (511271095).

6646524053 is a wasteful number, since it uses less digits than its factorization.

6646524053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511271094.

The product of its (nonzero) digits is 518400, while the sum is 41.

The square root of 6646524053 is about 81526.2169673045. The cubic root of 6646524053 is about 1880.1746530249.

The spelling of 6646524053 in words is "six billion, six hundred forty-six million, five hundred twenty-four thousand, fifty-three".