83555081 has 2 divisors, whose sum is σ = 83555082. Its totient is φ = 83555080.

The previous prime is 83555071. The next prime is 83555093. The reversal of 83555081 is 18055538.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59151481 + 24403600 = 7691^2 + 4940^2 .

It is a cyclic number.

It is not a de Polignac number, because 83555081 - 2²⁶ = 16446217 is a prime.

It is a super-2 number, since 2×83555081² = 13962903121833122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (83555011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41777540 + 41777541.

It is an arithmetic number, because the mean of its divisors is an integer number (41777541).

Almost surely, 2^83555081 is an apocalyptic number.

It is an amenable number.

83555081 is a deficient number, since it is larger than the sum of its proper divisors (1).

83555081 is an equidigital number, since it uses as much as digits as its factorization.

83555081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24000, while the sum is 35.

The square root of 83555081 is about 9140.8468426071. The cubic root of 83555081 is about 437.1773180889.

The spelling of 83555081 in words is "eighty-three million, five hundred fifty-five thousand, eighty-one".