7957217 has 2 divisors, whose sum is σ = 7957218. Its totient is φ = 7957216.

The previous prime is 7957211. The next prime is 7957237. The reversal of 7957217 is 7127597.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6507601 + 1449616 = 2551^2 + 1204^2 .

It is a cyclic number.

It is not a de Polignac number, because 7957217 - 2¹⁴ = 7940833 is a prime.

It is not a weakly prime, because it can be changed into another prime (7957211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3978608 + 3978609.

It is an arithmetic number, because the mean of its divisors is an integer number (3978609).

Almost surely, 2^7957217 is an apocalyptic number.

It is an amenable number.

7957217 is a deficient number, since it is larger than the sum of its proper divisors (1).

7957217 is an equidigital number, since it uses as much as digits as its factorization.

7957217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30870, while the sum is 38.

The square root of 7957217 is about 2820.8539487184. The cubic root of 7957217 is about 199.6428375546.

The spelling of 7957217 in words is "seven million, nine hundred fifty-seven thousand, two hundred seventeen".