211004055 has 16 divisors (see below), whose sum is σ = 375118560. Its totient is φ = 112535424.

The previous prime is 211004039. The next prime is 211004069. The reversal of 211004055 is 550400112.

It is not a de Polignac number, because 211004055 - 2⁴ = 211004039 is a prime.

It is a super-2 number, since 2×211004055² = 89045422452886050, which contains 22 as substring.

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, 781362 + ... + 781631.

It is an arithmetic number, because the mean of its divisors is an integer number (23444910).

Almost surely, 2^211004055 is an apocalyptic number.

211004055 is a deficient number, since it is larger than the sum of its proper divisors (164114505).

211004055 is a wasteful number, since it uses less digits than its factorization.

211004055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1563007 (or 1563001 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 211004055 is about 14525.9786245196. The cubic root of 211004055 is about 595.3379950021.

Adding to 211004055 its reverse (550400112), we get a palindrome (761404167).

The spelling of 211004055 in words is "two hundred eleven million, four thousand, fifty-five".