85518213 has 8 divisors (see below), whose sum is σ = 124390176. Its totient is φ = 51829200.

The previous prime is 85518193. The next prime is 85518217. The reversal of 85518213 is 31281558.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85518213 - 2¹⁶ = 85452677 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 2591461 = 85518213 / (8 + 5 + 5 + 1 + 8 + 2 + 1 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85518217) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1295698 + ... + 1295763.

It is an arithmetic number, because the mean of its divisors is an integer number (15548772).

Almost surely, 2^85518213 is an apocalyptic number.

It is an amenable number.

85518213 is a deficient number, since it is larger than the sum of its proper divisors (38871963).

85518213 is a wasteful number, since it uses less digits than its factorization.

85518213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2591475.

The product of its digits is 9600, while the sum is 33.

The square root of 85518213 is about 9247.6057982594. The cubic root of 85518213 is about 440.5746846827.

The spelling of 85518213 in words is "eighty-five million, five hundred eighteen thousand, two hundred thirteen".