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13245155 = 571134403
BaseRepresentation
bin110010100001…
…101011100011
3220220220221022
4302201223203
511342321110
61151520055
7220403420
oct62415343
926826838
1013245155
117527310
12452902b
132989991
141a8ad47
151269755
hexca1ae3

13245155 has 16 divisors (see below), whose sum is σ = 19816704. Its totient is φ = 8256480.

The previous prime is 13245151. The next prime is 13245187. The reversal of 13245155 is 55154231.

13245155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13245155 - 22 = 13245151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13245151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16817 + ... + 17586.

It is an arithmetic number, because the mean of its divisors is an integer number (1238544).

Almost surely, 213245155 is an apocalyptic number.

13245155 is a deficient number, since it is larger than the sum of its proper divisors (6571549).

13245155 is a wasteful number, since it uses less digits than its factorization.

13245155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34426.

The product of its digits is 3000, while the sum is 26.

The square root of 13245155 is about 3639.3893718590. The cubic root of 13245155 is about 236.6023288271.

Adding to 13245155 its reverse (55154231), we get a palindrome (68399386).

The spelling of 13245155 in words is "thirteen million, two hundred forty-five thousand, one hundred fifty-five".

Divisors: 1 5 7 11 35 55 77 385 34403 172015 240821 378433 1204105 1892165 2649031 13245155