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11147 = 71157
BaseRepresentation
bin10101110001011
3120021212
42232023
5324042
6123335
744333
oct25613
916255
1011147
118414
12654b
1350c6
1440c3
153482
hex2b8b

11147 has 4 divisors (see below), whose sum is σ = 11376. Its totient is φ = 10920.

The previous prime is 11131. The next prime is 11149. The reversal of 11147 is 74111.

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: 74111 = 372003.

It is a cyclic number.

It is not a de Polignac number, because 11147 - 24 = 11131 is a prime.

It is a Duffinian number.

It is a plaindrome in base 6 and base 10.

It is a nialpdrome in base 7.

It is a zygodrome in base 7.

It is not an unprimeable number, because it can be changed into a prime (11149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8 + ... + 149.

It is an arithmetic number, because the mean of its divisors is an integer number (2844).

211147 is an apocalyptic number.

11147 is a deficient number, since it is larger than the sum of its proper divisors (229).

11147 is an equidigital number, since it uses as much as digits as its factorization.

11147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228.

The product of its digits is 28, while the sum is 14.

The square root of 11147 is about 105.5793540424. The cubic root of 11147 is about 22.3384310534.

Adding to 11147 its product of digits (28), we get a triangular number (11175 = T149).

Adding to 11147 its reverse (74111), we get a palindrome (85258).

The spelling of 11147 in words is "eleven thousand, one hundred forty-seven", and thus it is an iban number.

Divisors: 1 71 157 11147