7208881 has 2 divisors, whose sum is σ = 7208882. Its totient is φ = 7208880.

The previous prime is 7208879. The next prime is 7208893. The reversal of 7208881 is 1888027.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4264225 + 2944656 = 2065^2 + 1716^2 .

It is a cyclic number.

It is not a de Polignac number, because 7208881 - 2¹ = 7208879 is a prime.

It is a super-2 number, since 2×7208881² = 103935930544322, which contains 22 as substring.

Together with 7208879, it forms a pair of twin primes.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (7208281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3604440 + 3604441.

It is an arithmetic number, because the mean of its divisors is an integer number (3604441).

Almost surely, 2^7208881 is an apocalyptic number.

It is an amenable number.

7208881 is a deficient number, since it is larger than the sum of its proper divisors (1).

7208881 is an equidigital number, since it uses as much as digits as its factorization.

7208881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7168, while the sum is 34.

The square root of 7208881 is about 2684.9359396455. The cubic root of 7208881 is about 193.1772379227.

The spelling of 7208881 in words is "seven million, two hundred eight thousand, eight hundred eighty-one".