85505315 has 16 divisors (see below), whose sum is σ = 117547200. Its totient is φ = 58490880.

The previous prime is 85505297. The next prime is 85505317. The reversal of 85505315 is 51350558.

It is not a de Polignac number, because 85505315 - 2¹² = 85501219 is a prime.

It is a super-2 number, since 2×85505315² = 14622317786498450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85505317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12995 + ... + 18435.

It is an arithmetic number, because the mean of its divisors is an integer number (7346700).

Almost surely, 2^85505315 is an apocalyptic number.

85505315 is a deficient number, since it is larger than the sum of its proper divisors (32041885).

85505315 is a wasteful number, since it uses less digits than its factorization.

85505315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5902.

The product of its (nonzero) digits is 15000, while the sum is 32.

The square root of 85505315 is about 9246.9084022715. The cubic root of 85505315 is about 440.5525341653.

The spelling of 85505315 in words is "eighty-five million, five hundred five thousand, three hundred fifteen".