166766051 has 2 divisors, whose sum is σ = 166766052. Its totient is φ = 166766050.

The previous prime is 166766023. The next prime is 166766137. The reversal of 166766051 is 150667661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166766051 - 2⁶ = 166765987 is a prime.

It is a super-2 number, since 2×166766051² = 55621831532269202, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 166765996 and 166766014.

It is not a weakly prime, because it can be changed into another prime (166766351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83383025 + 83383026.

It is an arithmetic number, because the mean of its divisors is an integer number (83383026).

Almost surely, 2^166766051 is an apocalyptic number.

166766051 is a deficient number, since it is larger than the sum of its proper divisors (1).

166766051 is an equidigital number, since it uses as much as digits as its factorization.

166766051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 166766051 is about 12913.7930523917. The cubic root of 166766051 is about 550.4305730265.

The spelling of 166766051 in words is "one hundred sixty-six million, seven hundred sixty-six thousand, fifty-one".