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54406143 = 32115310369
BaseRepresentation
bin1100111110001…
…0101111111111
310210101010012100
43033202233333
5102411444033
65222040143
71230305331
oct317425777
9123333170
1054406143
1128790160
1216279053
13b36baac
147323451
154b9a513
hex33e2bff

54406143 has 24 divisors (see below), whose sum is σ = 87356880. Its totient is φ = 32348160.

The previous prime is 54406141. The next prime is 54406181. The reversal of 54406143 is 34160445.

54406143 is a `hidden beast` number, since 5 + 4 + 40 + 614 + 3 = 666.

It is not a de Polignac number, because 54406143 - 21 = 54406141 is a prime.

It is a super-2 number, since 2×544061432 = 5920056792272898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54406141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63 + ... + 10431.

It is an arithmetic number, because the mean of its divisors is an integer number (3639870).

Almost surely, 254406143 is an apocalyptic number.

54406143 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

54406143 is a deficient number, since it is larger than the sum of its proper divisors (32950737).

54406143 is a wasteful number, since it uses less digits than its factorization.

54406143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10439 (or 10436 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 54406143 is about 7376.0519927669. The cubic root of 54406143 is about 378.9215567610.

Adding to 54406143 its reverse (34160445), we get a palindrome (88566588).

The spelling of 54406143 in words is "fifty-four million, four hundred six thousand, one hundred forty-three".

Divisors: 1 3 9 11 33 53 99 159 477 583 1749 5247 10369 31107 93321 114059 342177 549557 1026531 1648671 4946013 6045127 18135381 54406143