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54009161 = 312431307
BaseRepresentation
bin1100111000000…
…1110101001001
310202121221122022
43032001311021
5102311243121
65205334225
71224033053
oct316016511
9122557568
1054009161
1128539978
1216107375
13b2601ab
14725c8d3
154b1caab
hex3381d49

54009161 has 12 divisors (see below), whose sum is σ = 57149136. Its totient is φ = 51012360.

The previous prime is 54009127. The next prime is 54009199. The reversal of 54009161 is 16190045.

It is a de Polignac number, because none of the positive numbers 2k-54009161 is a prime.

It is a super-3 number, since 3×540091613 (a number of 24 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 54009161.

It is not an unprimeable number, because it can be changed into a prime (54009101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40670 + ... + 41976.

It is an arithmetic number, because the mean of its divisors is an integer number (4762428).

Almost surely, 254009161 is an apocalyptic number.

It is an amenable number.

54009161 is a deficient number, since it is larger than the sum of its proper divisors (3139975).

54009161 is a wasteful number, since it uses less digits than its factorization.

54009161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1412 (or 1381 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 54009161 is about 7349.0925290134. The cubic root of 54009161 is about 377.9976880872.

The spelling of 54009161 in words is "fifty-four million, nine thousand, one hundred sixty-one".

Divisors: 1 31 43 961 1307 1333 40517 41323 56201 1256027 1742231 54009161