210939055 has 16 divisors (see below), whose sum is σ = 264829824. Its totient is φ = 161125120.

The previous prime is 210939031. The next prime is 210939067. The reversal of 210939055 is 550939012.

It is a happy number.

It is not a de Polignac number, because 210939055 - 2⁵ = 210939023 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 210939055.

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, 1312 + ... + 20581.

It is an arithmetic number, because the mean of its divisors is an integer number (16551864).

Almost surely, 2^210939055 is an apocalyptic number.

210939055 is a deficient number, since it is larger than the sum of its proper divisors (53890769).

210939055 is a wasteful number, since it uses less digits than its factorization.

210939055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21986.

The product of its (nonzero) digits is 12150, while the sum is 34.

The square root of 210939055 is about 14523.7410814156. The cubic root of 210939055 is about 595.2768572452.

The spelling of 210939055 in words is "two hundred ten million, nine hundred thirty-nine thousand, fifty-five".