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55105883 = 77872269
BaseRepresentation
bin1101001000110…
…1100101011011
310211200200001122
43102031211123
5103101342013
65245035455
71236251360
oct322154533
9124620048
1055105883
1129118958
1216555b8b
13b555441
147466467
154c87a08
hex348d95b

55105883 has 4 divisors (see below), whose sum is σ = 62978160. Its totient is φ = 47233608.

The previous prime is 55105847. The next prime is 55105937. The reversal of 55105883 is 38850155.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55105883 - 28 = 55105627 is a prime.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (55101883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3936128 + ... + 3936141.

It is an arithmetic number, because the mean of its divisors is an integer number (15744540).

Almost surely, 255105883 is an apocalyptic number.

55105883 is a deficient number, since it is larger than the sum of its proper divisors (7872277).

55105883 is an equidigital number, since it uses as much as digits as its factorization.

55105883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7872276.

The product of its (nonzero) digits is 24000, while the sum is 35.

The square root of 55105883 is about 7423.3336850771. Note that the first 3 decimals coincide. The cubic root of 55105883 is about 380.5391308599.

The spelling of 55105883 in words is "fifty-five million, one hundred five thousand, eight hundred eighty-three".

Divisors: 1 7 7872269 55105883