Search a number
-
+
13171141 = 17774773
BaseRepresentation
bin110010001111…
…100111000101
3220210011102001
4302033213011
511332434031
61150145301
7216644554
oct62174705
926704361
1013171141
117486745
1244b2231
132962099
141a6bd9b
151252861
hexc8f9c5

13171141 has 4 divisors (see below), whose sum is σ = 13945932. Its totient is φ = 12396352.

The previous prime is 13171129. The next prime is 13171159. The reversal of 13171141 is 14117131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14117131 = 72016733.

It can be written as a sum of positive squares in 2 ways, for example, as 7784100 + 5387041 = 2790^2 + 2321^2 .

It is a cyclic number.

It is not a de Polignac number, because 13171141 - 27 = 13171013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13171121) 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, 387370 + ... + 387403.

It is an arithmetic number, because the mean of its divisors is an integer number (3486483).

Almost surely, 213171141 is an apocalyptic number.

It is an amenable number.

13171141 is a deficient number, since it is larger than the sum of its proper divisors (774791).

13171141 is an equidigital number, since it uses as much as digits as its factorization.

13171141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774790.

The product of its digits is 84, while the sum is 19.

The square root of 13171141 is about 3629.2066626193. The cubic root of 13171141 is about 236.1607936583.

Adding to 13171141 its reverse (14117131), we get a palindrome (27288272).

The spelling of 13171141 in words is "thirteen million, one hundred seventy-one thousand, one hundred forty-one".

Divisors: 1 17 774773 13171141