836555081 has 2 divisors, whose sum is σ = 836555082. Its totient is φ = 836555080.

The previous prime is 836555077. The next prime is 836555087. The reversal of 836555081 is 180555638.

836555081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 706709056 + 129846025 = 26584^2 + 11395^2 .

It is a cyclic number.

It is not a de Polignac number, because 836555081 - 2² = 836555077 is a prime.

It is a super-2 number, since 2×836555081² = 1399648807093833122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (836555087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 418277540 + 418277541.

It is an arithmetic number, because the mean of its divisors is an integer number (418277541).

Almost surely, 2^836555081 is an apocalyptic number.

It is an amenable number.

836555081 is a deficient number, since it is larger than the sum of its proper divisors (1).

836555081 is an equidigital number, since it uses as much as digits as its factorization.

836555081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144000, while the sum is 41.

The square root of 836555081 is about 28923.2619356808. The cubic root of 836555081 is about 942.2471816600.

The spelling of 836555081 in words is "eight hundred thirty-six million, five hundred fifty-five thousand, eighty-one".