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55231214055 = 353799515701
BaseRepresentation
bin110011011100000010…
…010111000111100111
312021120011021101020120
4303130002113013213
51401103142322210
641212312333023
73663452400453
oct633402270747
9167504241216
1055231214055
1121472642656
12a8549a4173
135292794364
14295d3bb663
151683c6e270
hexcdc0971e7

55231214055 has 16 divisors (see below), whose sum is σ = 90758320224. Its totient is φ = 28660521600.

The previous prime is 55231214053. The next prime is 55231214081. The reversal of 55231214055 is 55041213255.

It is not a de Polignac number, because 55231214055 - 21 = 55231214053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55231214053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49757296 + ... + 49758405.

It is an arithmetic number, because the mean of its divisors is an integer number (5672395014).

Almost surely, 255231214055 is an apocalyptic number.

55231214055 is a deficient number, since it is larger than the sum of its proper divisors (35527106169).

55231214055 is a wasteful number, since it uses less digits than its factorization.

55231214055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99515746.

The product of its (nonzero) digits is 30000, while the sum is 33.

The spelling of 55231214055 in words is "fifty-five billion, two hundred thirty-one million, two hundred fourteen thousand, fifty-five".

Divisors: 1 3 5 15 37 111 185 555 99515701 298547103 497578505 1492735515 3682080937 11046242811 18410404685 55231214055