845062081 has 2 divisors, whose sum is σ = 845062082. Its totient is φ = 845062080.

The previous prime is 845062073. The next prime is 845062121. The reversal of 845062081 is 180260548.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 842450625 + 2611456 = 29025^2 + 1616^2 .

It is a cyclic number.

It is not a de Polignac number, because 845062081 - 2³ = 845062073 is a prime.

It is a super-2 number, since 2×845062081² = 1428259841488101122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (845062181) 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, 422531040 + 422531041.

It is an arithmetic number, because the mean of its divisors is an integer number (422531041).

Almost surely, 2^845062081 is an apocalyptic number.

It is an amenable number.

845062081 is a deficient number, since it is larger than the sum of its proper divisors (1).

845062081 is an equidigital number, since it uses as much as digits as its factorization.

845062081 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 34.

The square root of 845062081 is about 29069.9515135475. The cubic root of 845062081 is about 945.4303466246.

The spelling of 845062081 in words is "eight hundred forty-five million, sixty-two thousand, eighty-one".