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85184105 = 517036821
BaseRepresentation
bin1010001001111…
…00111001101001
312221021210121212
411010330321221
5133301342410
612241442505
72053024106
oct504747151
9187253555
1085184105
11440a2096
1224640435
1314856bc6
14b455aad
157729b05
hex513ce69

85184105 has 4 divisors (see below), whose sum is σ = 102220932. Its totient is φ = 68147280.

The previous prime is 85184039. The next prime is 85184123. The reversal of 85184105 is 50148158.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50148158 = 225074079.

It can be written as a sum of positive squares in 2 ways, for example, as 44568976 + 40615129 = 6676^2 + 6373^2 .

It is not a de Polignac number, because 85184105 - 212 = 85180009 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8518406 + ... + 8518415.

It is an arithmetic number, because the mean of its divisors is an integer number (25555233).

Almost surely, 285184105 is an apocalyptic number.

It is an amenable number.

85184105 is a deficient number, since it is larger than the sum of its proper divisors (17036827).

85184105 is a wasteful number, since it uses less digits than its factorization.

85184105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17036826.

The product of its (nonzero) digits is 6400, while the sum is 32.

The square root of 85184105 is about 9229.5235521667. The cubic root of 85184105 is about 440.0001807850. Note that the first 3 decimals are identical.

The spelling of 85184105 in words is "eighty-five million, one hundred eighty-four thousand, one hundred five".

Divisors: 1 5 17036821 85184105