55311227 has 2 divisors, whose sum is σ = 55311228. Its totient is φ = 55311226.

The previous prime is 55311211. The next prime is 55311229. The reversal of 55311227 is 72211355.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55311227 - 2⁴ = 55311211 is a prime.

Together with 55311229, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 55311196 and 55311205.

It is not a weakly prime, because it can be changed into another prime (55311229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27655613 + 27655614.

It is an arithmetic number, because the mean of its divisors is an integer number (27655614).

Almost surely, 2^55311227 is an apocalyptic number.

55311227 is a deficient number, since it is larger than the sum of its proper divisors (1).

55311227 is an equidigital number, since it uses as much as digits as its factorization.

55311227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2100, while the sum is 26.

The square root of 55311227 is about 7437.1518069756. The cubic root of 55311227 is about 381.0112193958.

The spelling of 55311227 in words is "fifty-five million, three hundred eleven thousand, two hundred twenty-seven".