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51943 = 127409
BaseRepresentation
bin1100101011100111
32122020211
430223213
53130233
61040251
7304303
oct145347
978224
1051943
1136031
1226087
131a848
1414d03
15105cd
hexcae7

51943 has 4 divisors (see below), whose sum is σ = 52480. Its totient is φ = 51408.

The previous prime is 51941. The next prime is 51949. The reversal of 51943 is 34915.

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: 34915 = 56983.

It is a cyclic number.

It is not a de Polignac number, because 51943 - 21 = 51941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51941) 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, 78 + ... + 331.

It is an arithmetic number, because the mean of its divisors is an integer number (13120).

251943 is an apocalyptic number.

51943 is a deficient number, since it is larger than the sum of its proper divisors (537).

51943 is a wasteful number, since it uses less digits than its factorization.

51943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536.

The product of its digits is 540, while the sum is 22.

The square root of 51943 is about 227.9100699838. The cubic root of 51943 is about 37.3114685605.

The spelling of 51943 in words is "fifty-one thousand, nine hundred forty-three".

Divisors: 1 127 409 51943