55214447 has 2 divisors, whose sum is σ = 55214448. Its totient is φ = 55214446.

The previous prime is 55214407. The next prime is 55214449. The reversal of 55214447 is 74441255.

55214447 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 not a de Polignac number, because 55214447 - 2¹⁰ = 55213423 is a prime.

Together with 55214449, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_3294266 and since 55214447 and 3294266 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55214449) 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, 27607223 + 27607224.

It is an arithmetic number, because the mean of its divisors is an integer number (27607224).

Almost surely, 2^55214447 is an apocalyptic number.

55214447 is a deficient number, since it is larger than the sum of its proper divisors (1).

55214447 is an equidigital number, since it uses as much as digits as its factorization.

55214447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22400, while the sum is 32.

The square root of 55214447 is about 7430.6424352138. The cubic root of 55214447 is about 380.7888667471.

The spelling of 55214447 in words is "fifty-five million, two hundred fourteen thousand, four hundred forty-seven".