55000222 has 16 divisors (see below), whose sum is σ = 86313600. Its totient is φ = 26235352.

The previous prime is 55000207. The next prime is 55000243. The reversal of 55000222 is 22200055.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 55000196 and 55000205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19029 + ... + 21727.

It is an arithmetic number, because the mean of its divisors is an integer number (5394600).

Almost surely, 2^55000222 is an apocalyptic number.

55000222 is a deficient number, since it is larger than the sum of its proper divisors (31313378).

55000222 is a wasteful number, since it uses less digits than its factorization.

55000222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3167.

The product of its (nonzero) digits is 200, while the sum is 16.

The square root of 55000222 is about 7416.2134543175. The cubic root of 55000222 is about 380.2957577454.

Adding to 55000222 its reverse (22200055), we get a palindrome (77200277).

The spelling of 55000222 in words is "fifty-five million, two hundred twenty-two", and thus it is an aban number.