7216169 has 2 divisors, whose sum is σ = 7216170. Its totient is φ = 7216168.

The previous prime is 7216163. The next prime is 7216193. The reversal of 7216169 is 9616127.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3841600 + 3374569 = 1960^2 + 1837^2 .

It is an emirp because it is prime and its reverse (9616127) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7216169 is a prime.

It is a super-2 number, since 2×7216169² = 104146190073122, which contains 22 as substring.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (7216163) 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, 3608084 + 3608085.

It is an arithmetic number, because the mean of its divisors is an integer number (3608085).

Almost surely, 2^7216169 is an apocalyptic number.

It is an amenable number.

7216169 is a deficient number, since it is larger than the sum of its proper divisors (1).

7216169 is an equidigital number, since it uses as much as digits as its factorization.

7216169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 32.

The square root of 7216169 is about 2686.2927986353. The cubic root of 7216169 is about 193.2423151301.

The spelling of 7216169 in words is "seven million, two hundred sixteen thousand, one hundred sixty-nine".