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BaseRepresentation
bin10001011101
31112101
4101131
513432
65101
73154
oct2135
91471
101117
11926
12791
1367c
1459b
154e7
hex45d

1117 has 2 divisors, whose sum is σ = 1118. Its totient is φ = 1116.

The previous prime is 1109. The next prime is 1123. The reversal of 1117 is 7111.

Adding to 1117 its reverse (7111), we get a palindrome (8228).

It can be divided in two parts, 111 and 7, that multiplied together give a palindrome (777).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 676 + 441 = 26^2 + 21^2 .

It is a cyclic number.

It is not a de Polignac number, because 1117 - 23 = 1109 is a prime.

It is a Chen prime.

1117 is a lucky number.

It is a plaindrome in base 10, base 13, base 14 and base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 558 + 559.

It is an arithmetic number, because the mean of its divisors is an integer number (559).

It is an amenable number.

1117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1117 is an equidigital number, since it uses as much as digits as its factorization.

1117 is an evil number, because the sum of its binary digits is even.

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

The square root of 1117 is about 33.4215499341. The cubic root of 1117 is about 10.3757076016.

The spelling of 1117 in words is "one thousand, one hundred seventeen", and thus it is an iban number.