85083281 has 2 divisors, whose sum is σ = 85083282. Its totient is φ = 85083280.

The previous prime is 85083277. The next prime is 85083289. The reversal of 85083281 is 18238058.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62663056 + 22420225 = 7916^2 + 4735^2 .

It is a cyclic number.

It is not a de Polignac number, because 85083281 - 2² = 85083277 is a prime.

It is a super-2 number, since 2×85083281² = 14478329411449922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (85083289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42541640 + 42541641.

It is an arithmetic number, because the mean of its divisors is an integer number (42541641).

Almost surely, 2^85083281 is an apocalyptic number.

It is an amenable number.

85083281 is a deficient number, since it is larger than the sum of its proper divisors (1).

85083281 is an equidigital number, since it uses as much as digits as its factorization.

85083281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15360, while the sum is 35.

The square root of 85083281 is about 9224.0598978975. The cubic root of 85083281 is about 439.8265173523.

The spelling of 85083281 in words is "eighty-five million, eighty-three thousand, two hundred eighty-one".