5709921 has 32 divisors (see below), whose sum is σ = 9216000. Its totient is φ = 3139920.

The previous prime is 5709917. The next prime is 5709923. The reversal of 5709921 is 1299075.

5709921 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5709921 - 2² = 5709917 is a prime.

It is a Curzon number.

5709921 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5709923) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31810 + ... + 31988.

It is an arithmetic number, because the mean of its divisors is an integer number (288000).

Almost surely, 2^5709921 is an apocalyptic number.

It is an amenable number.

5709921 is a deficient number, since it is larger than the sum of its proper divisors (3506079).

5709921 is a wasteful number, since it uses less digits than its factorization.

5709921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 33.

The square root of 5709921 is about 2389.5440987770. The cubic root of 5709921 is about 178.7351763670.

The spelling of 5709921 in words is "five million, seven hundred nine thousand, nine hundred twenty-one".