53128166 has 32 divisors (see below), whose sum is σ = 98558208. Its totient is φ = 20916000.

The previous prime is 53128157. The next prime is 53128181. The reversal of 53128166 is 66182135.

It is a happy number.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45101 + ... + 46263.

It is an arithmetic number, because the mean of its divisors is an integer number (3079944).

Almost surely, 2^53128166 is an apocalyptic number.

53128166 is a deficient number, since it is larger than the sum of its proper divisors (45430042).

53128166 is a wasteful number, since it uses less digits than its factorization.

53128166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1436.

The product of its digits is 8640, while the sum is 32.

The square root of 53128166 is about 7288.9070511291. The cubic root of 53128166 is about 375.9311166630.

The spelling of 53128166 in words is "fifty-three million, one hundred twenty-eight thousand, one hundred sixty-six".