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55000550550001 = 77857221507143
BaseRepresentation
bin11001000000101110100000…
…10001110010100111110001
321012202000000221020020011211
430200113100101302213301
524202112111420100001
6312550523142040121
714404441625655310
oct1440272021624761
9235660027206154
1055000550550001
1116585669a18a51
126203585119041
13248c6b688ab74
14d82080144277
15655a55882351
hex3205d04729f1

55000550550001 has 4 divisors (see below), whose sum is σ = 62857772057152. Its totient is φ = 47143329042852.

The previous prime is 55000550549977. The next prime is 55000550550019. The reversal of 55000550550001 is 10005505500055.

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 not a de Polignac number, because 55000550550001 - 227 = 55000416332273 is a prime.

It is a super-2 number, since 2×550005505500012 (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55000550550041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3928610753565 + ... + 3928610753578.

It is an arithmetic number, because the mean of its divisors is an integer number (15714443014288).

Almost surely, 255000550550001 is an apocalyptic number.

It is an amenable number.

55000550550001 is a deficient number, since it is larger than the sum of its proper divisors (7857221507151).

55000550550001 is an equidigital number, since it uses as much as digits as its factorization.

55000550550001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7857221507150.

The product of its (nonzero) digits is 15625, while the sum is 31.

The spelling of 55000550550001 in words is "fifty-five trillion, five hundred fifty million, five hundred fifty thousand, one".

Divisors: 1 7 7857221507143 55000550550001