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55107165 = 356754833
BaseRepresentation
bin1101001000110…
…1111001011101
310211200201211010
43102031321131
5103101412130
65245045433
71236255201
oct322157135
9124621733
1055107165
1129119913
1216556879
13b555bb9
147466b01
154c880b0
hex348de5d

55107165 has 16 divisors (see below), whose sum is σ = 89489088. Its totient is φ = 28951296.

The previous prime is 55107139. The next prime is 55107167. The reversal of 55107165 is 56170155.

It is not a de Polignac number, because 55107165 - 25 = 55107133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55107167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26412 + ... + 28421.

It is an arithmetic number, because the mean of its divisors is an integer number (5593068).

Almost surely, 255107165 is an apocalyptic number.

It is an amenable number.

55107165 is a deficient number, since it is larger than the sum of its proper divisors (34381923).

55107165 is a wasteful number, since it uses less digits than its factorization.

55107165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54908.

The product of its (nonzero) digits is 5250, while the sum is 30.

The square root of 55107165 is about 7423.4200339197. The cubic root of 55107165 is about 380.5420818297.

The spelling of 55107165 in words is "fifty-five million, one hundred seven thousand, one hundred sixty-five".

Divisors: 1 3 5 15 67 201 335 1005 54833 164499 274165 822495 3673811 11021433 18369055 55107165