5991513321 has 8 divisors (see below), whose sum is σ = 8020512864. Its totient is φ = 3978428000.

The previous prime is 5991513287. The next prime is 5991513373. The reversal of 5991513321 is 1233151995.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5991513321 - 2¹⁵ = 5991480553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5991513321.

It is not an unprimeable number, because it can be changed into a prime (5991513221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3977676 + ... + 3979181.

It is an arithmetic number, because the mean of its divisors is an integer number (1002564108).

Almost surely, 2^5991513321 is an apocalyptic number.

It is an amenable number.

5991513321 is a deficient number, since it is larger than the sum of its proper divisors (2028999543).

5991513321 is a wasteful number, since it uses less digits than its factorization.

5991513321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7957111.

The product of its digits is 36450, while the sum is 39.

The square root of 5991513321 is about 77404.8662617539. The cubic root of 5991513321 is about 1816.2634486226.

The spelling of 5991513321 in words is "five billion, nine hundred ninety-one million, five hundred thirteen thousand, three hundred twenty-one".