85304517 has 4 divisors (see below), whose sum is σ = 113739360. Its totient is φ = 56869676.

The previous prime is 85304489. The next prime is 85304533. The reversal of 85304517 is 71540358.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85304517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85304617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14217417 + ... + 14217422.

It is an arithmetic number, because the mean of its divisors is an integer number (28434840).

Almost surely, 2^85304517 is an apocalyptic number.

It is an amenable number.

85304517 is a deficient number, since it is larger than the sum of its proper divisors (28434843).

85304517 is a wasteful number, since it uses less digits than its factorization.

85304517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28434842.

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 85304517 is about 9236.0444455405. The cubic root of 85304517 is about 440.2074039419.

The spelling of 85304517 in words is "eighty-five million, three hundred four thousand, five hundred seventeen".