166353241 has 2 divisors, whose sum is σ = 166353242. Its totient is φ = 166353240.

The previous prime is 166353217. The next prime is 166353269. The reversal of 166353241 is 142353661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105575625 + 60777616 = 10275^2 + 7796^2 .

It is an emirp because it is prime and its reverse (142353661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166353241 - 2¹¹ = 166351193 is a prime.

It is a super-3 number, since 3×166353241³ (a number of 26 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (166053241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83176620 + 83176621.

It is an arithmetic number, because the mean of its divisors is an integer number (83176621).

Almost surely, 2^166353241 is an apocalyptic number.

It is an amenable number.

166353241 is a deficient number, since it is larger than the sum of its proper divisors (1).

166353241 is an equidigital number, since it uses as much as digits as its factorization.

166353241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 31.

The square root of 166353241 is about 12897.7998511374. The cubic root of 166353241 is about 549.9760220952.

The spelling of 166353241 in words is "one hundred sixty-six million, three hundred fifty-three thousand, two hundred forty-one".