85024581 has 4 divisors (see below), whose sum is σ = 113366112. Its totient is φ = 56683052.

The previous prime is 85024579. The next prime is 85024591. The reversal of 85024581 is 18542058.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85024581 - 2¹ = 85024579 is a prime.

It is a super-2 number, since 2×85024581² = 14458358748451122, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85024591) 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 3 ways as a sum of consecutive naturals, for example, 14170761 + ... + 14170766.

It is an arithmetic number, because the mean of its divisors is an integer number (28341528).

Almost surely, 2^85024581 is an apocalyptic number.

It is an amenable number.

85024581 is a deficient number, since it is larger than the sum of its proper divisors (28341531).

85024581 is a wasteful number, since it uses less digits than its factorization.

85024581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28341530.

The product of its (nonzero) digits is 12800, while the sum is 33.

The square root of 85024581 is about 9220.8774528241. The cubic root of 85024581 is about 439.7253468446.

The spelling of 85024581 in words is "eighty-five million, twenty-four thousand, five hundred eighty-one".