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2013987055 = 5402797411
BaseRepresentation
bin111100000001011…
…0000000011101111
312012100200010212011
41320002300003233
513111040041210
6531502422051
7100623415243
oct17002600357
95170603764
102013987055
11943930313
12482591927
13261333922
1415169a423
15bbc26d8a
hex780b00ef

2013987055 has 4 divisors (see below), whose sum is σ = 2416784472. Its totient is φ = 1611189640.

The previous prime is 2013987047. The next prime is 2013987089. The reversal of 2013987055 is 5507893102.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2013987055 - 23 = 2013987047 is a prime.

It is a super-2 number, since 2×20139870552 = 8112287715415146050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2013986999 and 2013987017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201398701 + ... + 201398710.

It is an arithmetic number, because the mean of its divisors is an integer number (604196118).

Almost surely, 22013987055 is an apocalyptic number.

2013987055 is a deficient number, since it is larger than the sum of its proper divisors (402797417).

2013987055 is an equidigital number, since it uses as much as digits as its factorization.

2013987055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402797416.

The product of its (nonzero) digits is 75600, while the sum is 40.

The square root of 2013987055 is about 44877.4671188114. The cubic root of 2013987055 is about 1262.8513269864.

The spelling of 2013987055 in words is "two billion, thirteen million, nine hundred eighty-seven thousand, fifty-five".

Divisors: 1 5 402797411 2013987055