55055417 has 2 divisors, whose sum is σ = 55055418. Its totient is φ = 55055416.

The previous prime is 55055387. The next prime is 55055419. The reversal of 55055417 is 71455055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54922921 + 132496 = 7411^2 + 364^2 .

It is a cyclic number.

It is not a de Polignac number, because 55055417 - 2¹⁸ = 54793273 is a prime.

Together with 55055419, 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 (55055419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27527708 + 27527709.

It is an arithmetic number, because the mean of its divisors is an integer number (27527709).

Almost surely, 2^55055417 is an apocalyptic number.

It is an amenable number.

55055417 is a deficient number, since it is larger than the sum of its proper divisors (1).

55055417 is an equidigital number, since it uses as much as digits as its factorization.

55055417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17500, while the sum is 32.

The square root of 55055417 is about 7419.9337598121. The cubic root of 55055417 is about 380.4229293938.

The spelling of 55055417 in words is "fifty-five million, fifty-five thousand, four hundred seventeen".