84485081 has 2 divisors, whose sum is σ = 84485082. Its totient is φ = 84485080.

The previous prime is 84485059. The next prime is 84485083. The reversal of 84485081 is 18058448.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83083225 + 1401856 = 9115^2 + 1184^2 .

It is a cyclic number.

It is not a de Polignac number, because 84485081 - 2¹⁸ = 84222937 is a prime.

It is a super-2 number, since 2×84485081² = 14275457823153122, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 84485083, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (84485083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42242540 + 42242541.

It is an arithmetic number, because the mean of its divisors is an integer number (42242541).

Almost surely, 2^84485081 is an apocalyptic number.

It is an amenable number.

84485081 is a deficient number, since it is larger than the sum of its proper divisors (1).

84485081 is an equidigital number, since it uses as much as digits as its factorization.

84485081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40960, while the sum is 38.

The square root of 84485081 is about 9191.5766329830. The cubic root of 84485081 is about 438.7933208308.

The spelling of 84485081 in words is "eighty-four million, four hundred eighty-five thousand, eighty-one".