5717931721 has 8 divisors (see below), whose sum is σ = 5967509184. Its totient is φ = 5468435280.

The previous prime is 5717931707. The next prime is 5717931727. The reversal of 5717931721 is 1271397175.

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 5717931721 - 2⁹ = 5717931209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5717931727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157111 + ... + 190051.

It is an arithmetic number, because the mean of its divisors is an integer number (745938648).

Almost surely, 2^5717931721 is an apocalyptic number.

It is an amenable number.

5717931721 is a deficient number, since it is larger than the sum of its proper divisors (249577463).

5717931721 is a wasteful number, since it uses less digits than its factorization.

5717931721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40511.

The product of its digits is 92610, while the sum is 43.

The square root of 5717931721 is about 75617.0068238621. The cubic root of 5717931721 is about 1788.1872268187.

The spelling of 5717931721 in words is "five billion, seven hundred seventeen million, nine hundred thirty-one thousand, seven hundred twenty-one".