166774051 has 2 divisors, whose sum is σ = 166774052. Its totient is φ = 166774050.

The previous prime is 166774043. The next prime is 166774057. The reversal of 166774051 is 150477661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166774051 - 2³ = 166774043 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166774051.

It is not a weakly prime, because it can be changed into another prime (166774057) 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, 83387025 + 83387026.

It is an arithmetic number, because the mean of its divisors is an integer number (83387026).

Almost surely, 2^166774051 is an apocalyptic number.

166774051 is a deficient number, since it is larger than the sum of its proper divisors (1).

166774051 is an equidigital number, since it uses as much as digits as its factorization.

166774051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 166774051 is about 12914.1027950067. The cubic root of 166774051 is about 550.4393745264.

The spelling of 166774051 in words is "one hundred sixty-six million, seven hundred seventy-four thousand, fifty-one".