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7171 = 71101

7171 has 4 divisors (see below), whose sum is σ = 7344. Its totient is φ = 7000.

The previous prime is 7159. The next prime is 7177. The reversal of 7171 is 1717.

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: 1717 = 17101.

It is a cyclic number.

It is not a de Polignac number, because 7171 - 27 = 7043 is a prime.

It is a Duffinian number.

7171 is an undulating number in base 10.

7171 is a lucky number.

It is a plaindrome in base 13.

It is a nialpdrome in base 6.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (7177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21 + ... + 121.

It is an arithmetic number, because the mean of its divisors is an integer number (1836).

7171 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

7171 is a deficient number, since it is larger than the sum of its proper divisors (173).

7171 is a wasteful number, since it uses less digits than its factorization.

7171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172.

The product of its digits is 49, while the sum is 16.

The square root of 7171 is about 84.6817571854. The cubic root of 7171 is about 19.2838276291.

Adding to 7171 its reverse (1717), we get a palindrome (8888).

The spelling of 7171 in words is "seven thousand, one hundred seventy-one", and thus it is an iban number.

Divisors: 1 71 101 7171