85517445 has 16 divisors (see below), whose sum is σ = 147353472. Its totient is φ = 42100800.

The previous prime is 85517417. The next prime is 85517447. The reversal of 85517445 is 54471558.

It is not a de Polignac number, because 85517445 - 2⁹ = 85516933 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85517447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219081 + ... + 219470.

It is an arithmetic number, because the mean of its divisors is an integer number (9209592).

Almost surely, 2^85517445 is an apocalyptic number.

It is an amenable number.

85517445 is a deficient number, since it is larger than the sum of its proper divisors (61836027).

85517445 is a wasteful number, since it uses less digits than its factorization.

85517445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438572.

The product of its digits is 112000, while the sum is 39.

The square root of 85517445 is about 9247.5642739048. The cubic root of 85517445 is about 440.5733658121.

The spelling of 85517445 in words is "eighty-five million, five hundred seventeen thousand, four hundred forty-five".