216175055 has 4 divisors (see below), whose sum is σ = 259410072. Its totient is φ = 172940040.

The previous prime is 216175039. The next prime is 216175067. The reversal of 216175055 is 550571612.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 216175055 - 2⁴ = 216175039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21617501 + ... + 21617510.

It is an arithmetic number, because the mean of its divisors is an integer number (64852518).

Almost surely, 2^216175055 is an apocalyptic number.

216175055 is a deficient number, since it is larger than the sum of its proper divisors (43235017).

216175055 is an equidigital number, since it uses as much as digits as its factorization.

216175055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43235016.

The product of its (nonzero) digits is 10500, while the sum is 32.

The square root of 216175055 is about 14702.8927425864. The cubic root of 216175055 is about 600.1620441952.

The spelling of 216175055 in words is "two hundred sixteen million, one hundred seventy-five thousand, fifty-five".