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2005102055 = 511312111681
BaseRepresentation
bin111011110000011…
…0110110111100111
312011201221201221002
41313200312313213
513101301231210
6530544143515
7100455041405
oct16740666747
95151851832
102005102055
11939911940
1247b607b9b
1325c542728
14150426475
15bb06e4a5
hex77836de7

2005102055 has 16 divisors (see below), whose sum is σ = 2625926688. Its totient is φ = 1457664000.

The previous prime is 2005102037. The next prime is 2005102061. The reversal of 2005102055 is 5502015002.

It is not a de Polignac number, because 2005102055 - 26 = 2005101991 is a prime.

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, 165815 + ... + 177495.

It is an arithmetic number, because the mean of its divisors is an integer number (164120418).

Almost surely, 22005102055 is an apocalyptic number.

2005102055 is a deficient number, since it is larger than the sum of its proper divisors (620824633).

2005102055 is a wasteful number, since it uses less digits than its factorization.

2005102055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14818.

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 2005102055 is about 44778.3659259692. The cubic root of 2005102055 is about 1260.9915045725.

Adding to 2005102055 its reverse (5502015002), we get a palindrome (7507117057).

The spelling of 2005102055 in words is "two billion, five million, one hundred two thousand, fifty-five".

Divisors: 1 5 11 55 3121 11681 15605 34331 58405 128491 171655 642455 36456401 182282005 401020411 2005102055