85061 has 2 divisors, whose sum is σ = 85062. Its totient is φ = 85060.

The previous prime is 85049. The next prime is 85081. The reversal of 85061 is 16058.

It is an a-pointer prime, because the next prime (85081) can be obtained adding 85061 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84100 + 961 = 290^2 + 31^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85061 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 85061.

It is not a weakly prime, because it can be changed into another prime (85021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42530 + 42531.

It is an arithmetic number, because the mean of its divisors is an integer number (42531).

2⁸⁵⁰⁶¹ is an apocalyptic number.

It is an amenable number.

85061 is a deficient number, since it is larger than the sum of its proper divisors (1).

85061 is an equidigital number, since it uses as much as digits as its factorization.

85061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 85061 is about 291.6521901169. The cubic root of 85061 is about 43.9788121128.

The spelling of 85061 in words is "eighty-five thousand, sixty-one".