5321504665 has 16 divisors (see below), whose sum is σ = 6455907216. Its totient is φ = 4210972800.

The previous prime is 5321504653. The next prime is 5321504693. The reversal of 5321504665 is 5664051235.

It can be written as a sum of positive squares in 8 ways, for example, as 2285604864 + 3035899801 = 47808^2 + 55099^2 .

It is not a de Polignac number, because 5321504665 - 2¹⁷ = 5321373593 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5150989 + ... + 5152021.

It is an arithmetic number, because the mean of its divisors is an integer number (403494201).

Almost surely, 2^5321504665 is an apocalyptic number.

It is an amenable number.

5321504665 is a deficient number, since it is larger than the sum of its proper divisors (1134402551).

5321504665 is an frugal number, since it uses more digits than its factorization.

5321504665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341 (or 1139 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 37.

The square root of 5321504665 is about 72948.6440244094. The cubic root of 5321504665 is about 1745.8683116819.

The spelling of 5321504665 in words is "five billion, three hundred twenty-one million, five hundred four thousand, six hundred sixty-five".