85515216 has 20 divisors (see below), whose sum is σ = 220914432. Its totient is φ = 28505056.

The previous prime is 85515203. The next prime is 85515247. The reversal of 85515216 is 61251558.

It is a congruent number.

It is an unprimeable number.

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, 890736 + ... + 890831.

Almost surely, 2^85515216 is an apocalyptic number.

It is an amenable number.

85515216 is an abundant number, since it is smaller than the sum of its proper divisors (135399216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85515216 is a wasteful number, since it uses less digits than its factorization.

85515216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1781578 (or 1781572 counting only the distinct ones).

The product of its digits is 12000, while the sum is 33.

The square root of 85515216 is about 9247.4437548979. The cubic root of 85515216 is about 440.5695379516.

The spelling of 85515216 in words is "eighty-five million, five hundred fifteen thousand, two hundred sixteen".