166655141 has 8 divisors (see below), whose sum is σ = 177062520. Its totient is φ = 156558528.

The previous prime is 166655129. The next prime is 166655147. The reversal of 166655141 is 141556661.

It can be written as a sum of positive squares in 4 ways, for example, as 118352641 + 48302500 = 10879^2 + 6950^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166655141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166655147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76586 + ... + 78731.

It is an arithmetic number, because the mean of its divisors is an integer number (22132815).

Almost surely, 2^166655141 is an apocalyptic number.

It is an amenable number.

166655141 is a deficient number, since it is larger than the sum of its proper divisors (10407379).

166655141 is a wasteful number, since it uses less digits than its factorization.

166655141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155383.

The product of its digits is 21600, while the sum is 35.

The square root of 166655141 is about 12909.4980924899. The cubic root of 166655141 is about 550.3085222191.

The spelling of 166655141 in words is "one hundred sixty-six million, six hundred fifty-five thousand, one hundred forty-one".