85427 has 2 divisors, whose sum is σ = 85428. Its totient is φ = 85426.

The previous prime is 85411. The next prime is 85429. The reversal of 85427 is 72458.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85427 - 2⁴ = 85411 is a prime.

Together with 85429, it forms a pair of twin primes.

It is a Chen prime.

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 85396 and 85405.

It is not a weakly prime, because it can be changed into another prime (85429) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42713 + 42714.

It is an arithmetic number, because the mean of its divisors is an integer number (42714).

2⁸⁵⁴²⁷ is an apocalyptic number.

85427 is a deficient number, since it is larger than the sum of its proper divisors (1).

85427 is an equidigital number, since it uses as much as digits as its factorization.

85427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2240, while the sum is 26.

The square root of 85427 is about 292.2789763223. The cubic root of 85427 is about 44.0417991221.

It can be divided in two parts, 85 and 427, that added together give a 9-th power (512 = 2⁹).

The spelling of 85427 in words is "eighty-five thousand, four hundred twenty-seven".