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16241 = 109149
BaseRepresentation
bin11111101110001
3211021112
43331301
51004431
6203105
765231
oct37561
924245
1016241
1111225
129495
137514
145cc1
154c2b
hex3f71

16241 has 4 divisors (see below), whose sum is σ = 16500. Its totient is φ = 15984.

The previous prime is 16231. The next prime is 16249. The reversal of 16241 is 14261.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 14261 = 131097.

It can be written as a sum of positive squares in 2 ways, for example, as 6241 + 10000 = 79^2 + 100^2 .

It is a cyclic number.

It is not a de Polignac number, because 16241 - 210 = 15217 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16249) 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, 35 + ... + 183.

It is an arithmetic number, because the mean of its divisors is an integer number (4125).

216241 is an apocalyptic number.

It is an amenable number.

16241 is a deficient number, since it is larger than the sum of its proper divisors (259).

16241 is a wasteful number, since it uses less digits than its factorization.

16241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258.

The product of its digits is 48, while the sum is 14.

The square root of 16241 is about 127.4401820463. The cubic root of 16241 is about 25.3243081116.

The spelling of 16241 in words is "sixteen thousand, two hundred forty-one".

Divisors: 1 109 149 16241