85170233 has 2 divisors, whose sum is σ = 85170234. Its totient is φ = 85170232.

The previous prime is 85170227. The next prime is 85170269. The reversal of 85170233 is 33207158.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75203584 + 9966649 = 8672^2 + 3157^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85170233 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 85170196 and 85170205.

It is not a weakly prime, because it can be changed into another prime (85170203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42585116 + 42585117.

It is an arithmetic number, because the mean of its divisors is an integer number (42585117).

Almost surely, 2^85170233 is an apocalyptic number.

It is an amenable number.

85170233 is a deficient number, since it is larger than the sum of its proper divisors (1).

85170233 is an equidigital number, since it uses as much as digits as its factorization.

85170233 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 85170233 is about 9228.7720201552. The cubic root of 85170233 is about 439.9762952105.

The spelling of 85170233 in words is "eighty-five million, one hundred seventy thousand, two hundred thirty-three".