7128227 has 2 divisors, whose sum is σ = 7128228. Its totient is φ = 7128226.

The previous prime is 7128223. The next prime is 7128259. The reversal of 7128227 is 7228217.

It is a weak prime.

It is an emirp because it is prime and its reverse (7228217) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7128227 - 2² = 7128223 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7128227.

It is not a weakly prime, because it can be changed into another prime (7128221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3564113 + 3564114.

It is an arithmetic number, because the mean of its divisors is an integer number (3564114).

Almost surely, 2^7128227 is an apocalyptic number.

7128227 is a deficient number, since it is larger than the sum of its proper divisors (1).

7128227 is an equidigital number, since it uses as much as digits as its factorization.

7128227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3136, while the sum is 29.

The square root of 7128227 is about 2669.8739670629. The cubic root of 7128227 is about 192.4541027362.

The spelling of 7128227 in words is "seven million, one hundred twenty-eight thousand, two hundred twenty-seven".