85159073 has 2 divisors, whose sum is σ = 85159074. Its totient is φ = 85159072.

The previous prime is 85159057. The next prime is 85159093. The reversal of 85159073 is 37095158.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62615569 + 22543504 = 7913^2 + 4748^2 .

It is a cyclic number.

It is not a de Polignac number, because 85159073 - 2⁴ = 85159057 is a prime.

It is not a weakly prime, because it can be changed into another prime (85159093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42579536 + 42579537.

It is an arithmetic number, because the mean of its divisors is an integer number (42579537).

Almost surely, 2^85159073 is an apocalyptic number.

It is an amenable number.

85159073 is a deficient number, since it is larger than the sum of its proper divisors (1).

85159073 is an equidigital number, since it uses as much as digits as its factorization.

85159073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37800, while the sum is 38.

The square root of 85159073 is about 9228.1673695268. The cubic root of 85159073 is about 439.9570774246.

The spelling of 85159073 in words is "eighty-five million, one hundred fifty-nine thousand, seventy-three".