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54553161 = 3131983887
BaseRepresentation
bin1101000000011…
…0101001001001
310210122120212110
43100012221021
5102431200121
65225132533
71231460055
oct320065111
9123576773
1054553161
1128880663
121632a149
13b3c09a0
147360c65
154bc8d76
hex3406a49

54553161 has 32 divisors (see below), whose sum is σ = 83543040. Its totient is φ = 31385664.

The previous prime is 54553157. The next prime is 54553181. The reversal of 54553161 is 16135545.

It is not a de Polignac number, because 54553161 - 22 = 54553157 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54553141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61060 + ... + 61946.

It is an arithmetic number, because the mean of its divisors is an integer number (2610720).

Almost surely, 254553161 is an apocalyptic number.

It is an amenable number.

54553161 is a deficient number, since it is larger than the sum of its proper divisors (28989879).

54553161 is a wasteful number, since it uses less digits than its factorization.

54553161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005.

The product of its digits is 9000, while the sum is 30.

The square root of 54553161 is about 7386.0111697722. The cubic root of 54553161 is about 379.2625610586.

The spelling of 54553161 in words is "fifty-four million, five hundred fifty-three thousand, one hundred sixty-one".

Divisors: 1 3 13 19 39 57 83 247 249 741 887 1079 1577 2661 3237 4731 11531 16853 20501 34593 50559 61503 73621 219089 220863 657267 957073 1398799 2871219 4196397 18184387 54553161