1553222112 has 96 divisors (see below), whose sum is σ = 4509644832. Its totient is φ = 464984064.

The previous prime is 1553222101. The next prime is 1553222129. The reversal of 1553222112 is 2112223551.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 29358 + ... + 62994.

It is an arithmetic number, because the mean of its divisors is an integer number (46975467).

Almost surely, 2^1553222112 is an apocalyptic number.

1553222112 is a gapful number since it is divisible by the number (12) 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 1553222112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2254822416).

1553222112 is an abundant number, since it is smaller than the sum of its proper divisors (2956422720).

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

1553222112 is a wasteful number, since it uses less digits than its factorization.

1553222112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33700 (or 33692 counting only the distinct ones).

The product of its digits is 1200, while the sum is 24.

The square root of 1553222112 is about 39410.9389890675. The cubic root of 1553222112 is about 1158.0958932166.

Adding to 1553222112 its reverse (2112223551), we get a palindrome (3665445663).

The spelling of 1553222112 in words is "one billion, five hundred fifty-three million, two hundred twenty-two thousand, one hundred twelve".