5997865221 has 24 divisors (see below), whose sum is σ = 8732786400. Its totient is φ = 3966706656.

The previous prime is 5997865177. The next prime is 5997865243. The reversal of 5997865221 is 1225687995.

It is not a de Polignac number, because 5997865221 - 2²⁹ = 5460994309 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5997865721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1267566 + ... + 1272288.

It is an arithmetic number, because the mean of its divisors is an integer number (363866100).

Almost surely, 2^5997865221 is an apocalyptic number.

It is an amenable number.

5997865221 is a deficient number, since it is larger than the sum of its proper divisors (2734921179).

5997865221 is a wasteful number, since it uses less digits than its factorization.

5997865221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5825 (or 5822 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 54.

The square root of 5997865221 is about 77445.8857590253. The cubic root of 5997865221 is about 1816.9050588857.

The spelling of 5997865221 in words is "five billion, nine hundred ninety-seven million, eight hundred sixty-five thousand, two hundred twenty-one".