55113211 has 2 divisors, whose sum is σ = 55113212. Its totient is φ = 55113210.

The previous prime is 55113209. The next prime is 55113251. The reversal of 55113211 is 11231155.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55113211 - 2¹ = 55113209 is a prime.

Together with 55113209, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55113251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27556605 + 27556606.

It is an arithmetic number, because the mean of its divisors is an integer number (27556606).

Almost surely, 2^55113211 is an apocalyptic number.

55113211 is a deficient number, since it is larger than the sum of its proper divisors (1).

55113211 is an equidigital number, since it uses as much as digits as its factorization.

55113211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 150, while the sum is 19.

The square root of 55113211 is about 7423.8272474513. The cubic root of 55113211 is about 380.5559981888. Note that the first 3 decimals are identical.

Adding to 55113211 its reverse (11231155), we get a palindrome (66344366).

The spelling of 55113211 in words is "fifty-five million, one hundred thirteen thousand, two hundred eleven".