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55289505845 = 571579700167
BaseRepresentation
bin110011011111100000…
…101110100000110101
312021201012221220112202
4303133200232200311
51401213103141340
641222153554245
73665061021410
oct633740564065
9167635856482
1055289505845
11214a2537092
12a870415985
1352a1893942
142967032b77
151688e35c15
hexcdf82e835

55289505845 has 8 divisors (see below), whose sum is σ = 75825608064. Its totient is φ = 37912803984.

The previous prime is 55289505833. The next prime is 55289505847. The reversal of 55289505845 is 54850598255.

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 55289505845 - 214 = 55289489461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55289505847) 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, 789850049 + ... + 789850118.

It is an arithmetic number, because the mean of its divisors is an integer number (9478201008).

Almost surely, 255289505845 is an apocalyptic number.

It is an amenable number.

55289505845 is a deficient number, since it is larger than the sum of its proper divisors (20536102219).

55289505845 is a wasteful number, since it uses less digits than its factorization.

55289505845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1579700179.

The product of its (nonzero) digits is 14400000, while the sum is 56.

The spelling of 55289505845 in words is "fifty-five billion, two hundred eighty-nine million, five hundred five thousand, eight hundred forty-five".

Divisors: 1 5 7 35 1579700167 7898500835 11057901169 55289505845