166012051 has 2 divisors, whose sum is σ = 166012052. Its totient is φ = 166012050.

The previous prime is 166012031. The next prime is 166012061. The reversal of 166012051 is 150210661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166012051 - 2⁵ = 166012019 is a prime.

It is not a weakly prime, because it can be changed into another prime (166012031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83006025 + 83006026.

It is an arithmetic number, because the mean of its divisors is an integer number (83006026).

Almost surely, 2^166012051 is an apocalyptic number.

166012051 is a deficient number, since it is larger than the sum of its proper divisors (1).

166012051 is an equidigital number, since it uses as much as digits as its factorization.

166012051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 166012051 is about 12884.5663877369. The cubic root of 166012051 is about 549.5997650180.

The spelling of 166012051 in words is "one hundred sixty-six million, twelve thousand, fifty-one".