7271791 has 2 divisors, whose sum is σ = 7271792. Its totient is φ = 7271790.

The previous prime is 7271783. The next prime is 7271821. The reversal of 7271791 is 1971727.

It is a weak prime.

It is an emirp because it is prime and its reverse (1971727) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7271791 - 2³ = 7271783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7271731) 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 as a sum of consecutive naturals, namely, 3635895 + 3635896.

It is an arithmetic number, because the mean of its divisors is an integer number (3635896).

Almost surely, 2^7271791 is an apocalyptic number.

7271791 is a deficient number, since it is larger than the sum of its proper divisors (1).

7271791 is an equidigital number, since it uses as much as digits as its factorization.

7271791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6174, while the sum is 34.

The square root of 7271791 is about 2696.6258546561. The cubic root of 7271791 is about 193.7375467542.

The spelling of 7271791 in words is "seven million, two hundred seventy-one thousand, seven hundred ninety-one".