5728991 has 2 divisors, whose sum is σ = 5728992. Its totient is φ = 5728990.

The previous prime is 5728939. The next prime is 5728997. The reversal of 5728991 is 1998275.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5728991 is a 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 (5728997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2864495 + 2864496.

It is an arithmetic number, because the mean of its divisors is an integer number (2864496).

Almost surely, 2^5728991 is an apocalyptic number.

5728991 is a deficient number, since it is larger than the sum of its proper divisors (1).

5728991 is an equidigital number, since it uses as much as digits as its factorization.

5728991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 41.

The square root of 5728991 is about 2393.5310735397. The cubic root of 5728991 is about 178.9339352343.

The spelling of 5728991 in words is "five million, seven hundred twenty-eight thousand, nine hundred ninety-one".