85313519 has 4 divisors (see below), whose sum is σ = 88065600. Its totient is φ = 82561440.

The previous prime is 85313491. The next prime is 85313521. The reversal of 85313519 is 91531358.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85313519 is a prime.

It is a super-3 number, since 3×85313519³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85313539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1375994 + ... + 1376055.

It is an arithmetic number, because the mean of its divisors is an integer number (22016400).

Almost surely, 2^85313519 is an apocalyptic number.

85313519 is a deficient number, since it is larger than the sum of its proper divisors (2752081).

85313519 is a wasteful number, since it uses less digits than its factorization.

85313519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2752080.

The product of its digits is 16200, while the sum is 35.

The square root of 85313519 is about 9236.5317625178. The cubic root of 85313519 is about 440.2228881069. Note that the first 3 decimals are identical.

The spelling of 85313519 in words is "eighty-five million, three hundred thirteen thousand, five hundred nineteen".