85087 has 2 divisors, whose sum is σ = 85088. Its totient is φ = 85086.

The previous prime is 85081. The next prime is 85091. The reversal of 85087 is 78058.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85087 is a prime.

85087 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42543 + 42544.

It is an arithmetic number, because the mean of its divisors is an integer number (42544).

2⁸⁵⁰⁸⁷ is an apocalyptic number.

85087 is a deficient number, since it is larger than the sum of its proper divisors (1).

85087 is an equidigital number, since it uses as much as digits as its factorization.

85087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 85087 is about 291.6967603523. The cubic root of 85087 is about 43.9832925548.

It can be divided in two parts, 8508 and 7, that added together give a triangular number (8515 = T₁₃₀).

The spelling of 85087 in words is "eighty-five thousand, eighty-seven".