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55050010001 = 77864287143
BaseRepresentation
bin110011010001001111…
…000111110110010001
312021002112022021000022
4303101033013312101
51400220300310001
641142320433225
73656122235660
oct632117076621
9167075267008
1055050010001
112138a328338
12a804178815
13526408b41c
1429432ccdd7
151672dc911b
hexcd13c7d91

55050010001 has 4 divisors (see below), whose sum is σ = 62914297152. Its totient is φ = 47185722852.

The previous prime is 55050009983. The next prime is 55050010007. The reversal of 55050010001 is 10001005055.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55050010001 - 222 = 55045815697 is a prime.

It is a super-2 number, since 2×550500100012 (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55050010007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3932143565 + ... + 3932143578.

It is an arithmetic number, because the mean of its divisors is an integer number (15728574288).

Almost surely, 255050010001 is an apocalyptic number.

It is an amenable number.

55050010001 is a deficient number, since it is larger than the sum of its proper divisors (7864287151).

55050010001 is an equidigital number, since it uses as much as digits as its factorization.

55050010001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7864287150.

The product of its (nonzero) digits is 125, while the sum is 17.

Adding to 55050010001 its reverse (10001005055), we get a palindrome (65051015056).

The spelling of 55050010001 in words is "fifty-five billion, fifty million, ten thousand, one".

Divisors: 1 7 7864287143 55050010001