1555000222 has 8 divisors (see below), whose sum is σ = 2333201976. Its totient is φ = 777266232.

The previous prime is 1555000211. The next prime is 1555000247. The reversal of 1555000222 is 2220005551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1555000193 and 1555000202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108508 + ... + 121999.

It is an arithmetic number, because the mean of its divisors is an integer number (291650247).

Almost surely, 2^1555000222 is an apocalyptic number.

1555000222 is a deficient number, since it is larger than the sum of its proper divisors (778201754).

1555000222 is a wasteful number, since it uses less digits than its factorization.

1555000222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233882.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 1555000222 is about 39433.4911211270. The cubic root of 1555000222 is about 1158.5376494388.

Adding to 1555000222 its reverse (2220005551), we get a palindrome (3775005773).

The spelling of 1555000222 in words is "one billion, five hundred fifty-five million, two hundred twenty-two", and thus it is an aban number.