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54543231 = 326060359
BaseRepresentation
bin1101000000010…
…0001101111111
310210122002020200
43100010031333
5102430340411
65225014543
71231416111
oct320041577
9123562220
1054543231
1128874156
1216324453
13b3b9302
14735b3b1
154bc5e56
hex340437f

54543231 has 6 divisors (see below), whose sum is σ = 78784680. Its totient is φ = 36362148.

The previous prime is 54543227. The next prime is 54543241. The reversal of 54543231 is 13234545.

54543231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 54543231 - 22 = 54543227 is a prime.

It is a super-2 number, since 2×545432312 = 5949928095838722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 54543195 and 54543204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54543241) 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 5 ways as a sum of consecutive naturals, for example, 3030171 + ... + 3030188.

It is an arithmetic number, because the mean of its divisors is an integer number (13130780).

Almost surely, 254543231 is an apocalyptic number.

54543231 is a deficient number, since it is larger than the sum of its proper divisors (24241449).

54543231 is a wasteful number, since it uses less digits than its factorization.

54543231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6060365 (or 6060362 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 54543231 is about 7385.3389224869. The cubic root of 54543231 is about 379.2395479970.

Adding to 54543231 its reverse (13234545), we get a palindrome (67777776).

The spelling of 54543231 in words is "fifty-four million, five hundred forty-three thousand, two hundred thirty-one".

Divisors: 1 3 9 6060359 18181077 54543231