166053873 has 4 divisors (see below), whose sum is σ = 221405168. Its totient is φ = 110702580.

The previous prime is 166053871. The next prime is 166053889. The reversal of 166053873 is 378350661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 166053873 - 2¹ = 166053871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166053871) 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 3 ways as a sum of consecutive naturals, for example, 27675643 + ... + 27675648.

It is an arithmetic number, because the mean of its divisors is an integer number (55351292).

Almost surely, 2^166053873 is an apocalyptic number.

It is an amenable number.

166053873 is a deficient number, since it is larger than the sum of its proper divisors (55351295).

166053873 is an equidigital number, since it uses as much as digits as its factorization.

166053873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55351294.

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 166053873 is about 12886.1892349911. The cubic root of 166053873 is about 549.6459131366.

The spelling of 166053873 in words is "one hundred sixty-six million, fifty-three thousand, eight hundred seventy-three".