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2005230055 = 5401046011
BaseRepresentation
bin111011110000101…
…0110000111100111
312011202012020111211
41313201112013213
513101314330210
6530551012251
7100456113523
oct16741260747
95152166454
102005230055
1193999a024
1247b66a087
1325c588a7a
1415045ad83
15bb09738a
hex778561e7

2005230055 has 4 divisors (see below), whose sum is σ = 2406276072. Its totient is φ = 1604184040.

The previous prime is 2005230023. The next prime is 2005230077. The reversal of 2005230055 is 5500325002.

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

It is not a de Polignac number, because 2005230055 - 25 = 2005230023 is a prime.

It is a Smith number, since the sum of its digits (22) 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 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, 200523001 + ... + 200523010.

It is an arithmetic number, because the mean of its divisors is an integer number (601569018).

Almost surely, 22005230055 is an apocalyptic number.

2005230055 is a deficient number, since it is larger than the sum of its proper divisors (401046017).

2005230055 is an equidigital number, since it uses as much as digits as its factorization.

2005230055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401046016.

The product of its (nonzero) digits is 1500, while the sum is 22.

The square root of 2005230055 is about 44779.7951647839. The cubic root of 2005230055 is about 1261.0183367027.

Adding to 2005230055 its reverse (5500325002), we get a palindrome (7505555057).

The spelling of 2005230055 in words is "two billion, five million, two hundred thirty thousand, fifty-five".

Divisors: 1 5 401046011 2005230055