55112311 has 2 divisors, whose sum is σ = 55112312. Its totient is φ = 55112310.

The previous prime is 55112297. The next prime is 55112359. The reversal of 55112311 is 11321155.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55112311 - 2¹⁵ = 55079543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55112371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27556155 + 27556156.

It is an arithmetic number, because the mean of its divisors is an integer number (27556156).

Almost surely, 2^55112311 is an apocalyptic number.

55112311 is a deficient number, since it is larger than the sum of its proper divisors (1).

55112311 is an equidigital number, since it uses as much as digits as its factorization.

55112311 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 55112311 is about 7423.7666315692. The cubic root of 55112311 is about 380.5539266814.

Adding to 55112311 its reverse (11321155), we get a palindrome (66433466).

The spelling of 55112311 in words is "fifty-five million, one hundred twelve thousand, three hundred eleven".