55249211 has 2 divisors, whose sum is σ = 55249212. Its totient is φ = 55249210.

The previous prime is 55249189. The next prime is 55249213. The reversal of 55249211 is 11294255.

55249211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55249211 is a prime.

It is a super-2 number, since 2×55249211² = 6104950632245042, which contains 22 as substring.

Together with 55249213, 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 (55249213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27624605 + 27624606.

It is an arithmetic number, because the mean of its divisors is an integer number (27624606).

Almost surely, 2^55249211 is an apocalyptic number.

55249211 is a deficient number, since it is larger than the sum of its proper divisors (1).

55249211 is an equidigital number, since it uses as much as digits as its factorization.

55249211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3600, while the sum is 29.

The square root of 55249211 is about 7432.9812995863. The cubic root of 55249211 is about 380.8687671331.

The spelling of 55249211 in words is "fifty-five million, two hundred forty-nine thousand, two hundred eleven".