7288181 has 2 divisors, whose sum is σ = 7288182. Its totient is φ = 7288180.

The previous prime is 7288163. The next prime is 7288213. The reversal of 7288181 is 1818827.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7107556 + 180625 = 2666^2 + 425^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7288181 is a prime.

It is a super-2 number, since 2×7288181² = 106235164577522, which contains 22 as substring.

It is a Chen prime.

It is equal to p₄₉₄₉₀₉ and since 7288181 and 494909 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7288111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3644090 + 3644091.

It is an arithmetic number, because the mean of its divisors is an integer number (3644091).

Almost surely, 2^7288181 is an apocalyptic number.

It is an amenable number.

7288181 is a deficient number, since it is larger than the sum of its proper divisors (1).

7288181 is an equidigital number, since it uses as much as digits as its factorization.

7288181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7168, while the sum is 35.

The square root of 7288181 is about 2699.6631271327. The cubic root of 7288181 is about 193.8829935321.

The spelling of 7288181 in words is "seven million, two hundred eighty-eight thousand, one hundred eighty-one".