85247273 has 2 divisors, whose sum is σ = 85247274. Its totient is φ = 85247272.

The previous prime is 85247263. The next prime is 85247339. The reversal of 85247273 is 37274258.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76877824 + 8369449 = 8768^2 + 2893^2 .

It is a cyclic number.

It is not a de Polignac number, because 85247273 - 2⁴ = 85247257 is a prime.

It is equal to p_4957193 and since 85247273 and 4957193 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (85247263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42623636 + 42623637.

It is an arithmetic number, because the mean of its divisors is an integer number (42623637).

Almost surely, 2^85247273 is an apocalyptic number.

It is an amenable number.

85247273 is a deficient number, since it is larger than the sum of its proper divisors (1).

85247273 is an equidigital number, since it uses as much as digits as its factorization.

85247273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 94080, while the sum is 38.

The square root of 85247273 is about 9232.9449797992. The cubic root of 85247273 is about 440.1089141537.

The spelling of 85247273 in words is "eighty-five million, two hundred forty-seven thousand, two hundred seventy-three".