Search a number
-
+
85073185 = 5171000861
BaseRepresentation
bin1010001001000…
…01110100100001
312221002011110201
411010201310201
5133234320220
612235225201
72052052531
oct504416441
9187064421
1085073185
114402681a
12245a8201
1314818582
14b4274c1
157706d0a
hex5121d21

85073185 has 8 divisors (see below), whose sum is σ = 108093096. Its totient is φ = 64055040.

The previous prime is 85073167. The next prime is 85073201. The reversal of 85073185 is 58137058.

It can be written as a sum of positive squares in 4 ways, for example, as 4289041 + 80784144 = 2071^2 + 8988^2 .

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

It is not a de Polignac number, because 85073185 - 211 = 85071137 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 500346 + ... + 500515.

It is an arithmetic number, because the mean of its divisors is an integer number (13511637).

Almost surely, 285073185 is an apocalyptic number.

85073185 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

85073185 is a deficient number, since it is larger than the sum of its proper divisors (23019911).

85073185 is a wasteful number, since it uses less digits than its factorization.

85073185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000883.

The product of its (nonzero) digits is 33600, while the sum is 37.

The square root of 85073185 is about 9223.5126172191. The cubic root of 85073185 is about 439.8091200285.

It can be divided in two parts, 85073 and 185, that added together give a palindrome (85258).

The spelling of 85073185 in words is "eighty-five million, seventy-three thousand, one hundred eighty-five".

Divisors: 1 5 17 85 1000861 5004305 17014637 85073185