85217026 has 4 divisors (see below), whose sum is σ = 127825542. Its totient is φ = 42608512.

The previous prime is 85217023. The next prime is 85217059. The reversal of 85217026 is 62071258.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62071258 = 2 ⋅31035629.

It can be written as a sum of positive squares in only one way, i.e., 83740801 + 1476225 = 9151^2 + 1215^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (85217021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21304255 + ... + 21304258.

Almost surely, 2^85217026 is an apocalyptic number.

85217026 is a deficient number, since it is larger than the sum of its proper divisors (42608516).

85217026 is a wasteful number, since it uses less digits than its factorization.

85217026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42608515.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 85217026 is about 9231.3068413958. The cubic root of 85217026 is about 440.0568556006.

The spelling of 85217026 in words is "eighty-five million, two hundred seventeen thousand, twenty-six".