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69805055 = 525754323
BaseRepresentation
bin1000010100100…
…10001111111111
311212100110112102
410022102033333
5120332230210
610532055315
71505222165
oct412221777
9155313472
1069805055
1136448631
121b46453b
1311600b88
1493b1235
1561dcea5
hex42923ff

69805055 has 8 divisors (see below), whose sum is σ = 84093552. Its totient is φ = 55625728.

The previous prime is 69805027. The next prime is 69805061. The reversal of 69805055 is 55050896.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-69805055 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 25877 + ... + 28446.

It is an arithmetic number, because the mean of its divisors is an integer number (10511694).

Almost surely, 269805055 is an apocalyptic number.

69805055 is a deficient number, since it is larger than the sum of its proper divisors (14288497).

69805055 is a wasteful number, since it uses less digits than its factorization.

69805055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54585.

The product of its (nonzero) digits is 54000, while the sum is 38.

The square root of 69805055 is about 8354.9419507259. The cubic root of 69805055 is about 411.7455914356.

The spelling of 69805055 in words is "sixty-nine million, eight hundred five thousand, fifty-five".

Divisors: 1 5 257 1285 54323 271615 13961011 69805055