7229 has 2 divisors, whose sum is σ = 7230. Its totient is φ = 7228.
The previous prime is 7219. The next prime is 7237. The reversal of 7229 is 9227.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 7225 + 4 = 85^2 + 2^2 .
It is an emirp because it is prime and its reverse (9227) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 7229 - 24 = 7213 is a prime.
It is a super-3 number, since 3×72293 = 1133328809967, which contains 333 as substring.
It is a Chen prime.
It is a self number, because there is not a number n which added to its sum of digits gives 7229.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (7219) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3614 + 3615.
It is an arithmetic number, because the mean of its divisors is an integer number (3615).
27229 is an apocalyptic number.
It is an amenable number.
7229 is a deficient number, since it is larger than the sum of its proper divisors (1).
7229 is an equidigital number, since it uses as much as digits as its factorization.
7229 is an evil number, because the sum of its binary digits is even.
The product of its digits is 252, while the sum is 20.
The square root of 7229 is about 85.0235261560. The cubic root of 7229 is about 19.3356781408.
It can be divided in two parts, 72 and 29, that added together give a palindrome (101).
The spelling of 7229 in words is "seven thousand, two hundred twenty-nine".
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