111381552 has 120 divisors (see below), whose sum is σ = 333219744. Its totient is φ = 34609152.

The previous prime is 111381551. The next prime is 111381563. The reversal of 111381552 is 255183111.

It is not an unprimeable number, because it can be changed into a prime (111381551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 423373 + ... + 423635.

Almost surely, 2^111381552 is an apocalyptic number.

111381552 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 111381552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166609872).

111381552 is an abundant number, since it is smaller than the sum of its proper divisors (221838192).

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

111381552 is a wasteful number, since it uses less digits than its factorization.

111381552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467 (or 458 counting only the distinct ones).

The product of its digits is 1200, while the sum is 27.

The square root of 111381552 is about 10553.7458752805. The cubic root of 111381552 is about 481.1395840012.

The spelling of 111381552 in words is "one hundred eleven million, three hundred eighty-one thousand, five hundred fifty-two".