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54018539 = 192843081
BaseRepresentation
bin1100111000010…
…0000111101011
310202122102111122
43032010013223
5102312043124
65205445455
71224102311
oct316040753
9122572448
1054018539
1128545a23
121611088b
13b264543
1472620b1
154b2075e
hex33841eb

54018539 has 4 divisors (see below), whose sum is σ = 56861640. Its totient is φ = 51175440.

The previous prime is 54018533. The next prime is 54018583. The reversal of 54018539 is 93581045.

54018539 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-54018539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 54018499 and 54018508.

It is not an unprimeable number, because it can be changed into a prime (54018533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1421522 + ... + 1421559.

It is an arithmetic number, because the mean of its divisors is an integer number (14215410).

Almost surely, 254018539 is an apocalyptic number.

54018539 is a deficient number, since it is larger than the sum of its proper divisors (2843101).

54018539 is a wasteful number, since it uses less digits than its factorization.

54018539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2843100.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 54018539 is about 7349.7305392783. The cubic root of 54018539 is about 378.0195649756.

The spelling of 54018539 in words is "fifty-four million, eighteen thousand, five hundred thirty-nine".

Divisors: 1 19 2843081 54018539