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13171853 is a prime number
BaseRepresentation
bin110010001111…
…110010001101
3220210012101102
4302033302031
511332444403
61150152445
7216646622
oct62176215
926705342
1013171853
117487232
1244b2725
1329624c6
141a6c349
151252b88
hexc8fc8d

13171853 has 2 divisors, whose sum is σ = 13171854. Its totient is φ = 13171852.

The previous prime is 13171843. The next prime is 13171861. The reversal of 13171853 is 35817131.

13171853 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12096484 + 1075369 = 3478^2 + 1037^2 .

It is a cyclic number.

It is not a de Polignac number, because 13171853 - 212 = 13167757 is a prime.

It is a super-2 number, since 2×131718532 = 346995422907218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13171813) by changing a digit.

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 as a sum of consecutive naturals, namely, 6585926 + 6585927.

It is an arithmetic number, because the mean of its divisors is an integer number (6585927).

Almost surely, 213171853 is an apocalyptic number.

It is an amenable number.

13171853 is a deficient number, since it is larger than the sum of its proper divisors (1).

13171853 is an equidigital number, since it uses as much as digits as its factorization.

13171853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 29.

The square root of 13171853 is about 3629.3047543572. The cubic root of 13171853 is about 236.1650490086.

Adding to 13171853 its reverse (35817131), we get a palindrome (48988984).

The spelling of 13171853 in words is "thirteen million, one hundred seventy-one thousand, eight hundred fifty-three".