166151 has 2 divisors, whose sum is σ = 166152. Its totient is φ = 166150.
The previous prime is 166147. The next prime is 166157. The reversal of 166151 is 151661.
It is a happy number.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 166151 - 22 = 166147 is a prime.
It is a Sophie Germain prime.
It is a Chen 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 (166157) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83075 + 83076.
It is an arithmetic number, because the mean of its divisors is an integer number (83076).
2166151 is an apocalyptic number.
166151 is a deficient number, since it is larger than the sum of its proper divisors (1).
166151 is an equidigital number, since it uses as much as digits as its factorization.
166151 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 180, while the sum is 20.
The square root of 166151 is about 407.6162410896. The cubic root of 166151 is about 54.9753057187.
The spelling of 166151 in words is "one hundred sixty-six thousand, one hundred fifty-one".
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