166150001 has 2 divisors, whose sum is σ = 166150002. Its totient is φ = 166150000.

The previous prime is 166149989. The next prime is 166150007. The reversal of 166150001 is 100051661.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96510976 + 69639025 = 9824^2 + 8345^2 .

It is a cyclic number.

It is not a de Polignac number, because 166150001 - 2⁶ = 166149937 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (166150007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83075000 + 83075001.

It is an arithmetic number, because the mean of its divisors is an integer number (83075001).

Almost surely, 2^166150001 is an apocalyptic number.

It is an amenable number.

166150001 is a deficient number, since it is larger than the sum of its proper divisors (1).

166150001 is an equidigital number, since it uses as much as digits as its factorization.

166150001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 166150001 is about 12889.9185800377. The cubic root of 166150001 is about 549.7519553687.

The spelling of 166150001 in words is "one hundred sixty-six million, one hundred fifty thousand, one".