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2143015055 = 54711380701
BaseRepresentation
bin111111110111011…
…1101000010001111
312112100110102222222
41333232331002033
513342102440210
6552352125555
7104051220206
oct17756750217
95470412888
102143015055
119aa748a25
124b98368bb
13281c9bb5c
1416488623d
15c8212655
hex7fbbd08f

2143015055 has 16 divisors (see below), whose sum is σ = 2649608064. Its totient is φ = 1663065600.

The previous prime is 2143015009. The next prime is 2143015079. The reversal of 2143015055 is 5505103412.

It is not a de Polignac number, because 2143015055 - 28 = 2143014799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13796 + ... + 66905.

It is an arithmetic number, because the mean of its divisors is an integer number (165600504).

Almost surely, 22143015055 is an apocalyptic number.

2143015055 is a deficient number, since it is larger than the sum of its proper divisors (506593009).

2143015055 is a wasteful number, since it uses less digits than its factorization.

2143015055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80866.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 2143015055 is about 46292.7106032904. The cubic root of 2143015055 is about 1289.2636574492.

Adding to 2143015055 its reverse (5505103412), we get a palindrome (7648118467).

The spelling of 2143015055 in words is "two billion, one hundred forty-three million, fifteen thousand, fifty-five".

Divisors: 1 5 47 113 235 565 5311 26555 80701 403505 3792947 9119213 18964735 45596065 428603011 2143015055