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19195055 = 5112631327
BaseRepresentation
bin100100100111…
…0010010101111
31100010012122222
41021032102233
514403220210
61523225555
7322104155
oct111162257
940105588
1019195055
11a920590
1265182bb
133c90c29
1427993d5
151a42655
hex124e4af

19195055 has 16 divisors (see below), whose sum is σ = 25242624. Its totient is φ = 13896480.

The previous prime is 19195049. The next prime is 19195061. The reversal of 19195055 is 55059191.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (19195049) and next prime (19195061).

It is not a de Polignac number, because 19195055 - 26 = 19194991 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13802 + ... + 15128.

It is an arithmetic number, because the mean of its divisors is an integer number (1577664).

Almost surely, 219195055 is an apocalyptic number.

19195055 is a deficient number, since it is larger than the sum of its proper divisors (6047569).

19195055 is a wasteful number, since it uses less digits than its factorization.

19195055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1606.

The product of its (nonzero) digits is 10125, while the sum is 35.

The square root of 19195055 is about 4381.2161553614. The cubic root of 19195055 is about 267.7501895455.

The spelling of 19195055 in words is "nineteen million, one hundred ninety-five thousand, fifty-five".

Divisors: 1 5 11 55 263 1315 1327 2893 6635 14465 14597 72985 349001 1745005 3839011 19195055