5857991 has 2 divisors, whose sum is σ = 5857992. Its totient is φ = 5857990.

The previous prime is 5857981. The next prime is 5858003. The reversal of 5857991 is 1997585.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5857991 - 2¹⁰ = 5856967 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5857921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2928995 + 2928996.

It is an arithmetic number, because the mean of its divisors is an integer number (2928996).

Almost surely, 2^5857991 is an apocalyptic number.

5857991 is a deficient number, since it is larger than the sum of its proper divisors (1).

5857991 is an equidigital number, since it uses as much as digits as its factorization.

5857991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 113400, while the sum is 44.

The square root of 5857991 is about 2420.3286966856. The cubic root of 5857991 is about 180.2670008709.

The spelling of 5857991 in words is "five million, eight hundred fifty-seven thousand, nine hundred ninety-one".