133853 has 2 divisors, whose sum is σ = 133854. Its totient is φ = 133852.
The previous prime is 133843. The next prime is 133873. The reversal of 133853 is 358331.
133853 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 131044 + 2809 = 362^2 + 53^2 .
It is an emirp because it is prime and its reverse (358331) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 133853 - 28 = 133597 is a prime.
It is a plaindrome in base 14.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (133813) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66926 + 66927.
It is an arithmetic number, because the mean of its divisors is an integer number (66927).
2133853 is an apocalyptic number.
It is an amenable number.
133853 is a deficient number, since it is larger than the sum of its proper divisors (1).
133853 is an equidigital number, since it uses as much as digits as its factorization.
133853 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 1080, while the sum is 23.
The square root of 133853 is about 365.8592625587. The cubic root of 133853 is about 51.1535803636.
The spelling of 133853 in words is "one hundred thirty-three thousand, eight hundred fifty-three".
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