85247 has 2 divisors, whose sum is σ = 85248. Its totient is φ = 85246.

The previous prime is 85243. The next prime is 85259. The reversal of 85247 is 74258.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85247 - 2² = 85243 is a prime.

It is a Chen prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42623 + 42624.

It is an arithmetic number, because the mean of its divisors is an integer number (42624).

2⁸⁵²⁴⁷ is an apocalyptic number.

85247 is a deficient number, since it is larger than the sum of its proper divisors (1).

85247 is an equidigital number, since it uses as much as digits as its factorization.

85247 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 85247 is about 291.9708889598. The cubic root of 85247 is about 44.0108444345.

The spelling of 85247 in words is "eighty-five thousand, two hundred forty-seven".