166006051 has 4 divisors (see below), whose sum is σ = 167217912. Its totient is φ = 164794192.

The previous prime is 166006031. The next prime is 166006067. The reversal of 166006051 is 150600661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 166006051 - 2¹⁹ = 165481763 is a prime.

It is a super-2 number, since 2×166006051² = 55116017937229202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166006031) 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 in 3 ways as a sum of consecutive naturals, for example, 605725 + ... + 605998.

It is an arithmetic number, because the mean of its divisors is an integer number (41804478).

Almost surely, 2^166006051 is an apocalyptic number.

166006051 is a deficient number, since it is larger than the sum of its proper divisors (1211861).

166006051 is a wasteful number, since it uses less digits than its factorization.

166006051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1211860.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 166006051 is about 12884.3335489268. Note that the first 3 decimals coincide. The cubic root of 166006051 is about 549.5931437350.

The spelling of 166006051 in words is "one hundred sixty-six million, six thousand, fifty-one".