85775317 has 2 divisors, whose sum is σ = 85775318. Its totient is φ = 85775316.

The previous prime is 85775311. The next prime is 85775341. The reversal of 85775317 is 71357758.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76282756 + 9492561 = 8734^2 + 3081^2 .

It is a cyclic number.

It is not a de Polignac number, because 85775317 - 2³ = 85775309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85775311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42887658 + 42887659.

It is an arithmetic number, because the mean of its divisors is an integer number (42887659).

Almost surely, 2^85775317 is an apocalyptic number.

It is an amenable number.

85775317 is a deficient number, since it is larger than the sum of its proper divisors (1).

85775317 is an equidigital number, since it uses as much as digits as its factorization.

85775317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 205800, while the sum is 43.

The square root of 85775317 is about 9261.4964773518. The cubic root of 85775317 is about 441.0157610450.

The spelling of 85775317 in words is "eighty-five million, seven hundred seventy-five thousand, three hundred seventeen".