85023317 has 2 divisors, whose sum is σ = 85023318. Its totient is φ = 85023316.

The previous prime is 85023311. The next prime is 85023353. The reversal of 85023317 is 71332058.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53202436 + 31820881 = 7294^2 + 5641^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85023317 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85023317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85023311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42511658 + 42511659.

It is an arithmetic number, because the mean of its divisors is an integer number (42511659).

Almost surely, 2^85023317 is an apocalyptic number.

It is an amenable number.

85023317 is a deficient number, since it is larger than the sum of its proper divisors (1).

85023317 is an equidigital number, since it uses as much as digits as its factorization.

85023317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 85023317 is about 9220.8089124545. The cubic root of 85023317 is about 439.7231678058.

The spelling of 85023317 in words is "eighty-five million, twenty-three thousand, three hundred seventeen".