55530211 has 16 divisors (see below), whose sum is σ = 66935808. Its totient is φ = 45443200.

The previous prime is 55530197. The next prime is 55530227. The reversal of 55530211 is 11203555.

It is not a de Polignac number, because 55530211 - 2¹¹ = 55528163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55530281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2155 + ... + 10756.

It is an arithmetic number, because the mean of its divisors is an integer number (4183488).

Almost surely, 2^55530211 is an apocalyptic number.

55530211 is a deficient number, since it is larger than the sum of its proper divisors (11405597).

55530211 is a wasteful number, since it uses less digits than its factorization.

55530211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12962.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 55530211 is about 7451.8595665780. The cubic root of 55530211 is about 381.5133808111.

Adding to 55530211 its reverse (11203555), we get a palindrome (66733766).

The spelling of 55530211 in words is "fifty-five million, five hundred thirty thousand, two hundred eleven".