55347217 has 2 divisors, whose sum is σ = 55347218. Its totient is φ = 55347216.

The previous prime is 55347203. The next prime is 55347233. The reversal of 55347217 is 71274355.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43243776 + 12103441 = 6576^2 + 3479^2 .

It is a cyclic number.

It is not a de Polignac number, because 55347217 - 2¹⁵ = 55314449 is a prime.

It is not a weakly prime, because it can be changed into another prime (55347277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27673608 + 27673609.

It is an arithmetic number, because the mean of its divisors is an integer number (27673609).

Almost surely, 2^55347217 is an apocalyptic number.

It is an amenable number.

55347217 is a deficient number, since it is larger than the sum of its proper divisors (1).

55347217 is an equidigital number, since it uses as much as digits as its factorization.

55347217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29400, while the sum is 34.

The square root of 55347217 is about 7439.5710225792. The cubic root of 55347217 is about 381.0938404803.

The spelling of 55347217 in words is "fifty-five million, three hundred forty-seven thousand, two hundred seventeen".