85509593 has 4 divisors (see below), whose sum is σ = 92087268. Its totient is φ = 78931920.

The previous prime is 85509583. The next prime is 85509647. The reversal of 85509593 is 39590558.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5442889 + 80066704 = 2333^2 + 8948^2 .

It is a cyclic number.

It is not a de Polignac number, because 85509593 - 2⁴ = 85509577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85509533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3288818 + ... + 3288843.

It is an arithmetic number, because the mean of its divisors is an integer number (23021817).

Almost surely, 2^85509593 is an apocalyptic number.

It is an amenable number.

85509593 is a deficient number, since it is larger than the sum of its proper divisors (6577675).

85509593 is a wasteful number, since it uses less digits than its factorization.

85509593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6577674.

The product of its (nonzero) digits is 243000, while the sum is 44.

The square root of 85509593 is about 9247.1397199350. The cubic root of 85509593 is about 440.5598812810.

The spelling of 85509593 in words is "eighty-five million, five hundred nine thousand, five hundred ninety-three".