213287055 has 16 divisors (see below), whose sum is σ = 350483424. Its totient is φ = 110678400.

The previous prime is 213287051. The next prime is 213287069. The reversal of 213287055 is 550782312.

It is not a de Polignac number, because 213287055 - 2² = 213287051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213287051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191596 + ... + 192705.

It is an arithmetic number, because the mean of its divisors is an integer number (21905214).

Almost surely, 2^213287055 is an apocalyptic number.

213287055 is a deficient number, since it is larger than the sum of its proper divisors (137196369).

213287055 is a wasteful number, since it uses less digits than its factorization.

213287055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384346.

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 213287055 is about 14604.3505504353. The cubic root of 213287055 is about 597.4774230949.

The spelling of 213287055 in words is "two hundred thirteen million, two hundred eighty-seven thousand, fifty-five".