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13255189 = 171495233
BaseRepresentation
bin110010100100…
…001000010101
3220221102200221
4302210020111
511343131224
61152034341
7220444603
oct62441025
926842627
1013255189
117533902
1245329b1
13299140c
141a90873
15126c6e4
hexca4215

13255189 has 8 divisors (see below), whose sum is σ = 14131800. Its totient is φ = 12389376.

The previous prime is 13255171. The next prime is 13255201. The reversal of 13255189 is 98155231.

It can be written as a sum of positive squares in 4 ways, for example, as 4452100 + 8803089 = 2110^2 + 2967^2 .

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 13255189 - 25 = 13255157 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 (13253189) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84 + ... + 5149.

It is an arithmetic number, because the mean of its divisors is an integer number (1766475).

Almost surely, 213255189 is an apocalyptic number.

It is an amenable number.

13255189 is a deficient number, since it is larger than the sum of its proper divisors (876611).

13255189 is a wasteful number, since it uses less digits than its factorization.

13255189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5399.

The product of its digits is 10800, while the sum is 34.

The square root of 13255189 is about 3640.7676388366. The cubic root of 13255189 is about 236.6620605685.

The spelling of 13255189 in words is "thirteen million, two hundred fifty-five thousand, one hundred eighty-nine".

Divisors: 1 17 149 2533 5233 88961 779717 13255189