7081181 has 2 divisors, whose sum is σ = 7081182. Its totient is φ = 7081180.

The previous prime is 7081169. The next prime is 7081183. The reversal of 7081181 is 1811807.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4305625 + 2775556 = 2075^2 + 1666^2 .

It is a cyclic number.

It is not a de Polignac number, because 7081181 - 2⁶ = 7081117 is a prime.

It is a super-2 number, since 2×7081181² = 100286248709522, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 7081183, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is equal to p₄₈₁₈₁₄ and since 7081181 and 481814 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7081181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7081183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3540590 + 3540591.

It is an arithmetic number, because the mean of its divisors is an integer number (3540591).

Almost surely, 2^7081181 is an apocalyptic number.

It is an amenable number.

7081181 is a deficient number, since it is larger than the sum of its proper divisors (1).

7081181 is an equidigital number, since it uses as much as digits as its factorization.

7081181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 26.

The square root of 7081181 is about 2661.0488533659. The cubic root of 7081181 is about 192.0297714974.

Adding to 7081181 its reverse (1811807), we get a palindrome (8892988).

The spelling of 7081181 in words is "seven million, eighty-one thousand, one hundred eighty-one".