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13155223 is a prime number
BaseRepresentation
bin110010001011…
…101110010111
3220202100120111
4302023232113
511331431343
61145543451
7216550264
oct62135627
926670514
1013155223
117475794
1244a4b87
132957a73
141a6626b
15124cc9d
hexc8bb97

13155223 has 2 divisors, whose sum is σ = 13155224. Its totient is φ = 13155222.

The previous prime is 13155221. The next prime is 13155281. The reversal of 13155223 is 32255131.

13155223 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13155223 - 21 = 13155221 is a prime.

Together with 13155221, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 13155194 and 13155203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13155221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6577611 + 6577612.

It is an arithmetic number, because the mean of its divisors is an integer number (6577612).

Almost surely, 213155223 is an apocalyptic number.

13155223 is a deficient number, since it is larger than the sum of its proper divisors (1).

13155223 is an equidigital number, since it uses as much as digits as its factorization.

13155223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 900, while the sum is 22.

The square root of 13155223 is about 3627.0129583446. The cubic root of 13155223 is about 236.0656178258.

It can be divided in two parts, 13 and 155223, that added together give a square (155236 = 3942).

The spelling of 13155223 in words is "thirteen million, one hundred fifty-five thousand, two hundred twenty-three".