166305053 has 8 divisors (see below), whose sum is σ = 172444800. Its totient is φ = 160192368.

The previous prime is 166304993. The next prime is 166305077. The reversal of 166305053 is 350503661.

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

It is a cyclic number.

It is not a de Polignac number, because 166305053 - 2¹⁴ = 166288669 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166305353) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6200 + ... + 19262.

It is an arithmetic number, because the mean of its divisors is an integer number (21555600).

Almost surely, 2^166305053 is an apocalyptic number.

It is an amenable number.

166305053 is a deficient number, since it is larger than the sum of its proper divisors (6139747).

166305053 is a wasteful number, since it uses less digits than its factorization.

166305053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13531.

The product of its (nonzero) digits is 8100, while the sum is 29.

The square root of 166305053 is about 12895.9316452903. The cubic root of 166305053 is about 549.9229126120.

The spelling of 166305053 in words is "one hundred sixty-six million, three hundred five thousand, fifty-three".