55560223 has 2 divisors, whose sum is σ = 55560224. Its totient is φ = 55560222.

The previous prime is 55560221. The next prime is 55560229. The reversal of 55560223 is 32206555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55560223 - 2¹ = 55560221 is a prime.

Together with 55560221, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 55560191 and 55560200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55560221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27780111 + 27780112.

It is an arithmetic number, because the mean of its divisors is an integer number (27780112).

Almost surely, 2^55560223 is an apocalyptic number.

55560223 is a deficient number, since it is larger than the sum of its proper divisors (1).

55560223 is an equidigital number, since it uses as much as digits as its factorization.

55560223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 55560223 is about 7453.8730201151. The cubic root of 55560223 is about 381.5820996655.

Adding to 55560223 its reverse (32206555), we get a palindrome (87766778).

The spelling of 55560223 in words is "fifty-five million, five hundred sixty thousand, two hundred twenty-three".