555000222 has 64 divisors (see below), whose sum is σ = 1371502080. Its totient is φ = 146157696.

The previous prime is 555000217. The next prime is 555000283. The reversal of 555000222 is 222000555.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20128 + ... + 38924.

It is an arithmetic number, because the mean of its divisors is an integer number (21429720).

Almost surely, 2^555000222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 555000222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (685751040).

555000222 is an abundant number, since it is smaller than the sum of its proper divisors (816501858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

555000222 is a wasteful number, since it uses less digits than its factorization.

555000222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18865.

The product of its (nonzero) digits is 1000, while the sum is 21.

The square root of 555000222 is about 23558.4426904666. The cubic root of 555000222 is about 821.7966860606.

Adding to 555000222 its reverse (222000555), we get a palindrome (777000777).

It can be divided in two parts, 555000 and 222, that multiplied together give a square (123210000 = 11100²).

The spelling of 555000222 in words is "five hundred fifty-five million, two hundred twenty-two", and thus it is an aban number.