166045057 has 8 divisors (see below), whose sum is σ = 169073280. Its totient is φ = 163024080.

The previous prime is 166045049. The next prime is 166045063. The reversal of 166045057 is 750540661.

It is a happy number.

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

It is not a de Polignac number, because 166045057 - 2³ = 166045049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166045037) 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 7 ways as a sum of consecutive naturals, for example, 68488 + ... + 70870.

It is an arithmetic number, because the mean of its divisors is an integer number (21134160).

Almost surely, 2^166045057 is an apocalyptic number.

It is an amenable number.

166045057 is a deficient number, since it is larger than the sum of its proper divisors (3028223).

166045057 is a wasteful number, since it uses less digits than its factorization.

166045057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3623.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 166045057 is about 12885.8471588018. The cubic root of 166045057 is about 549.6361858435.

The spelling of 166045057 in words is "one hundred sixty-six million, forty-five thousand, fifty-seven".