166553341 has 2 divisors, whose sum is σ = 166553342. Its totient is φ = 166553340.

The previous prime is 166553323. The next prime is 166553347. The reversal of 166553341 is 143355661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134676025 + 31877316 = 11605^2 + 5646^2 .

It is an emirp because it is prime and its reverse (143355661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166553341 - 2¹¹ = 166551293 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166553297 and 166553306.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166553347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83276670 + 83276671.

It is an arithmetic number, because the mean of its divisors is an integer number (83276671).

Almost surely, 2^166553341 is an apocalyptic number.

It is an amenable number.

166553341 is a deficient number, since it is larger than the sum of its proper divisors (1).

166553341 is an equidigital number, since it uses as much as digits as its factorization.

166553341 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 34.

The square root of 166553341 is about 12905.5546568135. The cubic root of 166553341 is about 550.1964488324.

The spelling of 166553341 in words is "one hundred sixty-six million, five hundred fifty-three thousand, three hundred forty-one".