211355155 has 16 divisors (see below), whose sum is σ = 277701984. Its totient is φ = 153146880.

The previous prime is 211355141. The next prime is 211355167. The reversal of 211355155 is 551553112.

It is a de Polignac number, because none of the positive numbers 2^k-211355155 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8299 + ... + 22171.

It is an arithmetic number, because the mean of its divisors is an integer number (17356374).

Almost surely, 2^211355155 is an apocalyptic number.

211355155 is a deficient number, since it is larger than the sum of its proper divisors (66346829).

211355155 is a wasteful number, since it uses less digits than its factorization.

211355155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14166.

The product of its digits is 3750, while the sum is 28.

The square root of 211355155 is about 14538.0588456644. The cubic root of 211355155 is about 595.6680160570.

The spelling of 211355155 in words is "two hundred eleven million, three hundred fifty-five thousand, one hundred fifty-five".