85165507 has 4 divisors (see below), whose sum is σ = 97332016. Its totient is φ = 72999000.

The previous prime is 85165477. The next prime is 85165511. The reversal of 85165507 is 70556158.

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

It is a cyclic number.

It is not a de Polignac number, because 85165507 - 2¹⁵ = 85132739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85165567) 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, 6083244 + ... + 6083257.

It is an arithmetic number, because the mean of its divisors is an integer number (24333004).

Almost surely, 2^85165507 is an apocalyptic number.

85165507 is a deficient number, since it is larger than the sum of its proper divisors (12166509).

85165507 is a wasteful number, since it uses less digits than its factorization.

85165507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12166508.

The product of its (nonzero) digits is 42000, while the sum is 37.

The square root of 85165507 is about 9228.5159695370. The cubic root of 85165507 is about 439.9681571308.

The spelling of 85165507 in words is "eighty-five million, one hundred sixty-five thousand, five hundred seven".