166575001 has 2 divisors, whose sum is σ = 166575002. Its totient is φ = 166575000.

The previous prime is 166574917. The next prime is 166575023. The reversal of 166575001 is 100575661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134096400 + 32478601 = 11580^2 + 5699^2 .

It is a cyclic number.

It is not a de Polignac number, because 166575001 - 2⁹ = 166574489 is a prime.

It is not a weakly prime, because it can be changed into another prime (166575041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83287500 + 83287501.

It is an arithmetic number, because the mean of its divisors is an integer number (83287501).

Almost surely, 2^166575001 is an apocalyptic number.

It is an amenable number.

166575001 is a deficient number, since it is larger than the sum of its proper divisors (1).

166575001 is an equidigital number, since it uses as much as digits as its factorization.

166575001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 166575001 is about 12906.3938030730. The cubic root of 166575001 is about 550.2202985261.

The spelling of 166575001 in words is "one hundred sixty-six million, five hundred seventy-five thousand, one".