166541075 has 6 divisors (see below), whose sum is σ = 206510964. Its totient is φ = 133232840.

The previous prime is 166541017. The next prime is 166541093. The reversal of 166541075 is 570145661.

It is a de Polignac number, because none of the positive numbers 2^k-166541075 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3330797 + ... + 3330846.

It is an arithmetic number, because the mean of its divisors is an integer number (34418494).

Almost surely, 2^166541075 is an apocalyptic number.

166541075 is a deficient number, since it is larger than the sum of its proper divisors (39969889).

166541075 is an equidigital number, since it uses as much as digits as its factorization.

166541075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6661653 (or 6661648 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 166541075 is about 12905.0794263344. The cubic root of 166541075 is about 550.1829418976.

The spelling of 166541075 in words is "one hundred sixty-six million, five hundred forty-one thousand, seventy-five".