85458243 has 32 divisors (see below), whose sum is σ = 126846720. Its totient is φ = 50843520.

The previous prime is 85458239. The next prime is 85458251. The reversal of 85458243 is 34285458.

It is not a de Polignac number, because 85458243 - 2² = 85458239 is a prime.

It is a super-3 number, since 3×85458243³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (39) 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 (39).

It is not an unprimeable number, because it can be changed into a prime (85458203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 219493 + ... + 219881.

It is an arithmetic number, because the mean of its divisors is an integer number (3963960).

Almost surely, 2^85458243 is an apocalyptic number.

85458243 is a deficient number, since it is larger than the sum of its proper divisors (41388477).

85458243 is a wasteful number, since it uses less digits than its factorization.

85458243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579.

The product of its digits is 153600, while the sum is 39.

The square root of 85458243 is about 9244.3627687364. The cubic root of 85458243 is about 440.4716756615.

The spelling of 85458243 in words is "eighty-five million, four hundred fifty-eight thousand, two hundred forty-three".