55006211 has 4 divisors (see below), whose sum is σ = 59237472. Its totient is φ = 50774952.

The previous prime is 55006177. The next prime is 55006213. The reversal of 55006211 is 11260055.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11260055 = 5 ⋅2252011.

It is a cyclic number.

It is not a de Polignac number, because 55006211 - 2¹⁰ = 55005187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55006213) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2115611 + ... + 2115636.

It is an arithmetic number, because the mean of its divisors is an integer number (14809368).

Almost surely, 2^55006211 is an apocalyptic number.

55006211 is a deficient number, since it is larger than the sum of its proper divisors (4231261).

55006211 is a wasteful number, since it uses less digits than its factorization.

55006211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4231260.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 55006211 is about 7416.6172208090. The cubic root of 55006211 is about 380.3095607723.

Adding to 55006211 its reverse (11260055), we get a palindrome (66266266).

It can be divided in two parts, 5500 and 6211, that added together give a palindrome (11711).

The spelling of 55006211 in words is "fifty-five million, six thousand, two hundred eleven".