166033801 has 2 divisors, whose sum is σ = 166033802. Its totient is φ = 166033800.

The previous prime is 166033771. The next prime is 166033807. The reversal of 166033801 is 108330661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110754576 + 55279225 = 10524^2 + 7435^2 .

It is an emirp because it is prime and its reverse (108330661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166033801 - 2²⁷ = 31816073 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166033801.

It is not a weakly prime, because it can be changed into another prime (166033807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83016900 + 83016901.

It is an arithmetic number, because the mean of its divisors is an integer number (83016901).

Almost surely, 2^166033801 is an apocalyptic number.

It is an amenable number.

166033801 is a deficient number, since it is larger than the sum of its proper divisors (1).

166033801 is an equidigital number, since it uses as much as digits as its factorization.

166033801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 166033801 is about 12885.4103931540. The cubic root of 166033801 is about 549.6237658316.

The spelling of 166033801 in words is "one hundred sixty-six million, thirty-three thousand, eight hundred one".