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54931 = 163337
BaseRepresentation
bin1101011010010011
32210100111
431122103
53224211
61102151
7316102
oct153223
983314
1054931
11382a8
1227957
131c006
1416039
1511421
hexd693

54931 has 4 divisors (see below), whose sum is σ = 55432. Its totient is φ = 54432.

The previous prime is 54919. The next prime is 54941. The reversal of 54931 is 13945.

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: 13945 = 52789.

It is a cyclic number.

It is not a de Polignac number, because 54931 - 29 = 54419 is a prime.

It is a super-2 number, since 2×549312 = 6034829522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54941) 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, 6 + ... + 331.

It is an arithmetic number, because the mean of its divisors is an integer number (13858).

254931 is an apocalyptic number.

54931 is a deficient number, since it is larger than the sum of its proper divisors (501).

54931 is a wasteful number, since it uses less digits than its factorization.

54931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500.

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

The square root of 54931 is about 234.3736333293. The cubic root of 54931 is about 38.0136146968.

The spelling of 54931 in words is "fifty-four thousand, nine hundred thirty-one".

Divisors: 1 163 337 54931