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55548042879 = 3713719307627
BaseRepresentation
bin110011101110111010…
…111101111001111111
312022101020102221200110
4303232322331321333
51402230244333004
641303551201103
74004350400610
oct635672757177
9168336387613
1055548042879
112161547085a
12a922b16193
135313305034
14298d4d1c07
1516a19a4589
hexceeebde7f

55548042879 has 16 divisors (see below), whose sum is σ = 85262485248. Its totient is φ = 31510045632.

The previous prime is 55548042863. The next prime is 55548042899. The reversal of 55548042879 is 97824084555.

It is not a de Polignac number, because 55548042879 - 24 = 55548042863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55548042829) 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, 9650937 + ... + 9656690.

It is an arithmetic number, because the mean of its divisors is an integer number (5328905328).

Almost surely, 255548042879 is an apocalyptic number.

55548042879 is a deficient number, since it is larger than the sum of its proper divisors (29714442369).

55548042879 is a wasteful number, since it uses less digits than its factorization.

55548042879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19307774.

The product of its (nonzero) digits is 16128000, while the sum is 57.

The spelling of 55548042879 in words is "fifty-five billion, five hundred forty-eight million, forty-two thousand, eight hundred seventy-nine".

Divisors: 1 3 7 21 137 411 959 2877 19307627 57922881 135153389 405460167 2645144899 7935434697 18516014293 55548042879