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BaseRepresentation
bin100001011100001
3212111010
410023201
51021441
6211133
7100626
oct41341
925433
1017121
1111955
129aa9
137a40
14634d
155116
hex42e1

17121 has 8 divisors (see below), whose sum is σ = 24640. Its totient is φ = 10512.

The previous prime is 17117. The next prime is 17123. The reversal of 17121 is 12171.

Adding to 17121 its reverse (12171), we get a palindrome (29292).

Subtracting from 17121 its reverse (12171), we obtain a triangular number (4950 = T99).

17121 is nontrivially palindromic in base 12.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 17121 - 22 = 17117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 17097 and 17106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181 + ... + 258.

It is an arithmetic number, because the mean of its divisors is an integer number (3080).

217121 is an apocalyptic number.

It is an amenable number.

17121 is a deficient number, since it is larger than the sum of its proper divisors (7519).

17121 is a wasteful number, since it uses less digits than its factorization.

17121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455.

The product of its digits is 14, while the sum is 12.

The square root of 17121 is about 130.8472391761. The cubic root of 17121 is about 25.7736766552.

The spelling of 17121 in words is "seventeen thousand, one hundred twenty-one", and thus it is an iban number.

Divisors: 1 3 13 39 439 1317 5707 17121