1171 has 2 divisors, whose sum is σ = 1172. Its totient is φ = 1170.

The previous prime is 1163. The next prime is 1181. The reversal of 1171 is 1711.

1171 is nontrivially palindromic in base 5.

It is an a-pointer prime, because the next prime (1181) can be obtained adding 1171 to its sum of digits (10).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1171 - 2^{3} = 1163 is a prime.

1171 is an undulating number in base 5.

It is a plaindrome in base 8.

It is a nialpdrome in base 11 and base 15.

It is not a weakly prime, because it can be changed into another prime (1151) 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 as a sum of consecutive naturals, namely, 585 + 586.

It is an arithmetic number, because the mean of its divisors is an integer number (586).

1171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1171 is an equidigital number, since it uses as much as digits as its factorization.

1171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7, while the sum is 10.

The square root of 1171 is about 34.2198772645. The cubic root of 1171 is about 10.5402836502.

Adding to 1171 its reverse (1711), we get a palindrome (2882).

The spelling of 1171 in words is "one thousand, one hundred seventy-one", and thus it is an iban number.

• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.128 sec. • engine limits •