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55088872069 = 711715439897
BaseRepresentation
bin110011010011100011…
…010111101010000101
312021012020102122202011
4303103203113222011
51400310222401234
641150225414221
73660103454320
oct632343275205
9167166378664
1055088872069
11213aa260a50
12a81519a371
13526c14702a
1429485277b7
151676503b64
hexcd38d7a85

55088872069 has 8 divisors (see below), whose sum is σ = 68682230208. Its totient is φ = 42926393760.

The previous prime is 55088872063. The next prime is 55088872117. The reversal of 55088872069 is 96027888055.

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

It is a cyclic number.

It is not a de Polignac number, because 55088872069 - 213 = 55088863877 is a prime.

It is a super-2 number, since 2×550888720692 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55088872063) 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 7 ways as a sum of consecutive naturals, for example, 357719872 + ... + 357720025.

It is an arithmetic number, because the mean of its divisors is an integer number (8585278776).

Almost surely, 255088872069 is an apocalyptic number.

It is an amenable number.

55088872069 is a deficient number, since it is larger than the sum of its proper divisors (13593358139).

55088872069 is a wasteful number, since it uses less digits than its factorization.

55088872069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715439915.

The product of its (nonzero) digits is 9676800, while the sum is 58.

The spelling of 55088872069 in words is "fifty-five billion, eighty-eight million, eight hundred seventy-two thousand, sixty-nine".

Divisors: 1 7 11 77 715439897 5008079279 7869838867 55088872069