85317497 has 2 divisors, whose sum is σ = 85317498. Its totient is φ = 85317496.

The previous prime is 85317451. The next prime is 85317517. The reversal of 85317497 is 79471358.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74321641 + 10995856 = 8621^2 + 3316^2 .

It is a cyclic number.

It is not a de Polignac number, because 85317497 - 2⁸ = 85317241 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (85317437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42658748 + 42658749.

It is an arithmetic number, because the mean of its divisors is an integer number (42658749).

Almost surely, 2^85317497 is an apocalyptic number.

It is an amenable number.

85317497 is a deficient number, since it is larger than the sum of its proper divisors (1).

85317497 is an equidigital number, since it uses as much as digits as its factorization.

85317497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 44.

The square root of 85317497 is about 9236.7471005760. The cubic root of 85317497 is about 440.2297302403.

The spelling of 85317497 in words is "eighty-five million, three hundred seventeen thousand, four hundred ninety-seven".