5717991 has 8 divisors (see below), whose sum is σ = 7644784. Its totient is φ = 3801600.

The previous prime is 5717977. The next prime is 5718023. The reversal of 5717991 is 1997175.

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

It is not a de Polignac number, because 5717991 - 2⁶ = 5717927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5717951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1210 + ... + 3591.

It is an arithmetic number, because the mean of its divisors is an integer number (955598).

Almost surely, 2^5717991 is an apocalyptic number.

5717991 is a deficient number, since it is larger than the sum of its proper divisors (1926793).

5717991 is a wasteful number, since it uses less digits than its factorization.

5717991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5201.

The product of its digits is 19845, while the sum is 39.

The square root of 5717991 is about 2391.2321091856. The cubic root of 5717991 is about 178.8193406302.

The spelling of 5717991 in words is "five million, seven hundred seventeen thousand, nine hundred ninety-one".