55224161 has 2 divisors, whose sum is σ = 55224162. Its totient is φ = 55224160.

The previous prime is 55224121. The next prime is 55224167. The reversal of 55224161 is 16142255.

55224161 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 can be written as a sum of positive squares in only one way, i.e., 48385936 + 6838225 = 6956^2 + 2615^2 .

It is a cyclic number.

It is not a de Polignac number, because 55224161 - 2⁶ = 55224097 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55224161.

It is not a weakly prime, because it can be changed into another prime (55224167) 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, 27612080 + 27612081.

It is an arithmetic number, because the mean of its divisors is an integer number (27612081).

Almost surely, 2^55224161 is an apocalyptic number.

It is an amenable number.

55224161 is a deficient number, since it is larger than the sum of its proper divisors (1).

55224161 is an equidigital number, since it uses as much as digits as its factorization.

55224161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2400, while the sum is 26.

The square root of 55224161 is about 7431.2960511609. The cubic root of 55224161 is about 380.8111964473.

The spelling of 55224161 in words is "fifty-five million, two hundred twenty-four thousand, one hundred sixty-one".