166001051 has 8 divisors (see below), whose sum is σ = 175593120. Its totient is φ = 156606912.

The previous prime is 166001021. The next prime is 166001057. The reversal of 166001051 is 150100661.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 166001051 - 2⁶ = 166000987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166001057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47756 + ... + 51113.

It is an arithmetic number, because the mean of its divisors is an integer number (21949140).

Almost surely, 2^166001051 is an apocalyptic number.

166001051 is a deficient number, since it is larger than the sum of its proper divisors (9592069).

166001051 is an equidigital number, since it uses as much as digits as its factorization.

166001051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98965.

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

The square root of 166001051 is about 12884.1395133707. The cubic root of 166001051 is about 549.5876258773.

The spelling of 166001051 in words is "one hundred sixty-six million, one thousand, fifty-one".