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2005112255 = 51989120161
BaseRepresentation
bin111011110000011…
…1001010110111111
312011201222020220212
41313200321112333
513101302043010
6530544303035
7100455113216
oct16740712677
95151866825
102005112255
11939919573
1247b611a7b
1325c547273
1415042a07d
15bb072505
hex778395bf

2005112255 has 8 divisors (see below), whose sum is σ = 2406375024. Its totient is φ = 1603929600.

The previous prime is 2005112203. The next prime is 2005112279. The reversal of 2005112255 is 5522115002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2005112255 - 210 = 2005111231 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2005112255.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89375 + ... + 109535.

It is an arithmetic number, because the mean of its divisors is an integer number (300796878).

Almost surely, 22005112255 is an apocalyptic number.

2005112255 is a deficient number, since it is larger than the sum of its proper divisors (401262769).

2005112255 is a wasteful number, since it uses less digits than its factorization.

2005112255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40057.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 2005112255 is about 44778.4798201100. The cubic root of 2005112255 is about 1260.9936427997.

Adding to 2005112255 its reverse (5522115002), we get a palindrome (7527227257).

The spelling of 2005112255 in words is "two billion, five million, one hundred twelve thousand, two hundred fifty-five".

Divisors: 1 5 19891 20161 99455 100805 401022451 2005112255