1555020222 has 32 divisors (see below), whose sum is σ = 3567473664. Its totient is φ = 442648800.

The previous prime is 1555020221. The next prime is 1555020251. The reversal of 1555020222 is 2220205551.

It is a junction number, because it is equal to n+sod(n) for n = 1555020192 and 1555020201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1555020221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56929 + ... + 79692.

It is an arithmetic number, because the mean of its divisors is an integer number (111483552).

Almost surely, 2^1555020222 is an apocalyptic number.

1555020222 is an abundant number, since it is smaller than the sum of its proper divisors (2012453442).

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

1555020222 is a wasteful number, since it uses less digits than its factorization.

1555020222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136904.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 1555020222 is about 39433.7447118581. The cubic root of 1555020222 is about 1158.5426163520.

Adding to 1555020222 its reverse (2220205551), we get a palindrome (3775225773).

The spelling of 1555020222 in words is "one billion, five hundred fifty-five million, twenty thousand, two hundred twenty-two".