5257721764 has 12 divisors (see below), whose sum is σ = 9201784284. Its totient is φ = 2628640544.

The previous prime is 5257721759. The next prime is 5257721783. The reversal of 5257721764 is 4671277525.

It can be written as a sum of positive squares in 2 ways, for example, as 164044864 + 5093676900 = 12808^2 + 71370^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6174 + ... + 102730.

It is an arithmetic number, because the mean of its divisors is an integer number (766815357).

Almost surely, 2^5257721764 is an apocalyptic number.

It is an amenable number.

5257721764 is a deficient number, since it is larger than the sum of its proper divisors (3944062520).

5257721764 is a wasteful number, since it uses less digits than its factorization.

5257721764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110174 (or 110172 counting only the distinct ones).

The product of its digits is 823200, while the sum is 46.

The square root of 5257721764 is about 72510.1493861377. The cubic root of 5257721764 is about 1738.8650020866.

The spelling of 5257721764 in words is "five billion, two hundred fifty-seven million, seven hundred twenty-one thousand, seven hundred sixty-four".