5715991 has 2 divisors, whose sum is σ = 5715992. Its totient is φ = 5715990.

The previous prime is 5715989. The next prime is 5716003. The reversal of 5715991 is 1995175.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5715991 - 2¹ = 5715989 is a prime.

It is a super-2 number, since 2×5715991² = 65345106224162, which contains 22 as substring.

Together with 5715989, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5715991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5715901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2857995 + 2857996.

It is an arithmetic number, because the mean of its divisors is an integer number (2857996).

Almost surely, 2^5715991 is an apocalyptic number.

5715991 is a deficient number, since it is larger than the sum of its proper divisors (1).

5715991 is an equidigital number, since it uses as much as digits as its factorization.

5715991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14175, while the sum is 37.

The square root of 5715991 is about 2390.8138781595. The cubic root of 5715991 is about 178.7984894614.

The spelling of 5715991 in words is "five million, seven hundred fifteen thousand, nine hundred ninety-one".