1553222244 has 96 divisors (see below), whose sum is σ = 4192505856. Its totient is φ = 438399360.

The previous prime is 1553222227. The next prime is 1553222287. The reversal of 1553222244 is 4422223551.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3689154 + ... + 3689574.

It is an arithmetic number, because the mean of its divisors is an integer number (43671936).

Almost surely, 2^1553222244 is an apocalyptic number.

1553222244 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1553222244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2096252928).

1553222244 is an abundant number, since it is smaller than the sum of its proper divisors (2639283612).

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

1553222244 is a wasteful number, since it uses less digits than its factorization.

1553222244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865 (or 863 counting only the distinct ones).

The product of its digits is 19200, while the sum is 30.

The square root of 1553222244 is about 39410.9406637294. The cubic root of 1553222244 is about 1158.0959260234.

Adding to 1553222244 its reverse (4422223551), we get a palindrome (5975445795).

The spelling of 1553222244 in words is "one billion, five hundred fifty-three million, two hundred twenty-two thousand, two hundred forty-four".