5997921 has 4 divisors (see below), whose sum is σ = 7997232. Its totient is φ = 3998612.

The previous prime is 5997919. The next prime is 5997961. The reversal of 5997921 is 1297995.

5997921 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5997921 - 2¹ = 5997919 is a prime.

It is a D-number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5997961) 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 3 ways as a sum of consecutive naturals, for example, 999651 + ... + 999656.

It is an arithmetic number, because the mean of its divisors is an integer number (1999308).

Almost surely, 2^5997921 is an apocalyptic number.

It is an amenable number.

5997921 is a deficient number, since it is larger than the sum of its proper divisors (1999311).

5997921 is a wasteful number, since it uses less digits than its factorization.

5997921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1999310.

The product of its digits is 51030, while the sum is 42.

The square root of 5997921 is about 2449.0653319175. The cubic root of 5997921 is about 181.6910691158.

The spelling of 5997921 in words is "five million, nine hundred ninety-seven thousand, nine hundred twenty-one".