211042855 has 16 divisors (see below), whose sum is σ = 258098400. Its totient is φ = 165632128.

The previous prime is 211042847. The next prime is 211042921. The reversal of 211042855 is 558240112.

It is a cyclic number.

It is not a de Polignac number, because 211042855 - 2³ = 211042847 is a prime.

It is a congruent 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, 60129 + ... + 63541.

It is an arithmetic number, because the mean of its divisors is an integer number (16131150).

Almost surely, 2^211042855 is an apocalyptic number.

211042855 is a deficient number, since it is larger than the sum of its proper divisors (47055545).

211042855 is a wasteful number, since it uses less digits than its factorization.

211042855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3650.

The product of its (nonzero) digits is 3200, while the sum is 28.

The square root of 211042855 is about 14527.3141013747. The cubic root of 211042855 is about 595.3744835560.

Adding to 211042855 its reverse (558240112), we get a palindrome (769282967).

The spelling of 211042855 in words is "two hundred eleven million, forty-two thousand, eight hundred fifty-five".