55050217 has 2 divisors, whose sum is σ = 55050218. Its totient is φ = 55050216.

The previous prime is 55050209. The next prime is 55050253. The reversal of 55050217 is 71205055.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41938576 + 13111641 = 6476^2 + 3621^2 .

It is a cyclic number.

It is not a de Polignac number, because 55050217 - 2³ = 55050209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55050191 and 55050200.

It is not a weakly prime, because it can be changed into another prime (55050257) 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, 27525108 + 27525109.

It is an arithmetic number, because the mean of its divisors is an integer number (27525109).

Almost surely, 2^55050217 is an apocalyptic number.

It is an amenable number.

55050217 is a deficient number, since it is larger than the sum of its proper divisors (1).

55050217 is an equidigital number, since it uses as much as digits as its factorization.

55050217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1750, while the sum is 25.

The square root of 55050217 is about 7419.5833440969. The cubic root of 55050217 is about 380.4109519982.

The spelling of 55050217 in words is "fifty-five million, fifty thousand, two hundred seventeen".