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53943 = 317981
BaseRepresentation
bin1101001010110111
32201222220
431022313
53211233
61053423
7313161
oct151267
981886
1053943
113758a
1227273
131b726
1415931
1510eb3
hexd2b7

53943 has 4 divisors (see below), whose sum is σ = 71928. Its totient is φ = 35960.

The previous prime is 53939. The next prime is 53951. The reversal of 53943 is 34935.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 53943 - 22 = 53939 is a prime.

It is an Ulam number.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53923) 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, 8988 + ... + 8993.

It is an arithmetic number, because the mean of its divisors is an integer number (17982).

253943 is an apocalyptic number.

53943 is a deficient number, since it is larger than the sum of its proper divisors (17985).

53943 is a wasteful number, since it uses less digits than its factorization.

53943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17984.

The product of its digits is 1620, while the sum is 24.

The square root of 53943 is about 232.2563239182. The cubic root of 53943 is about 37.7843276481.

The spelling of 53943 in words is "fifty-three thousand, nine hundred forty-three".

Divisors: 1 3 17981 53943