85458215 has 12 divisors (see below), whose sum is σ = 106213224. Its totient is φ = 66005856.

The previous prime is 85458203. The next prime is 85458229. The reversal of 85458215 is 51285458.

It is not a de Polignac number, because 85458215 - 2⁴ = 85458199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 5957 + ... + 14366.

It is an arithmetic number, because the mean of its divisors is an integer number (8851102).

Almost surely, 2^85458215 is an apocalyptic number.

85458215 is a deficient number, since it is larger than the sum of its proper divisors (20755009).

85458215 is a wasteful number, since it uses less digits than its factorization.

85458215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20386 (or 20357 counting only the distinct ones).

The product of its digits is 64000, while the sum is 38.

The square root of 85458215 is about 9244.3612542998. The cubic root of 85458215 is about 440.4716275553.

The spelling of 85458215 in words is "eighty-five million, four hundred fifty-eight thousand, two hundred fifteen".