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18053 = 72579
BaseRepresentation
bin100011010000101
3220202122
410122011
51034203
6215325
7103430
oct43205
926678
1018053
1112622
12a545
1382a9
146817
155538
hex4685

18053 has 4 divisors (see below), whose sum is σ = 20640. Its totient is φ = 15468.

The previous prime is 18049. The next prime is 18059. The reversal of 18053 is 35081.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18053 - 22 = 18049 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18059) 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, 1283 + ... + 1296.

It is an arithmetic number, because the mean of its divisors is an integer number (5160).

218053 is an apocalyptic number.

It is an amenable number.

18053 is a deficient number, since it is larger than the sum of its proper divisors (2587).

18053 is an equidigital number, since it uses as much as digits as its factorization.

18053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2586.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 18053 is about 134.3614528055. The cubic root of 18053 is about 26.2331108290.

The spelling of 18053 in words is "eighteen thousand, fifty-three".

Divisors: 1 7 2579 18053