111255540 has 96 divisors (see below), whose sum is σ = 343405440. Its totient is φ = 26688000.

The previous prime is 111255517. The next prime is 111255569. The reversal of 111255540 is 45552111.

It is a self number, because there is not a number n which added to its sum of digits gives 111255540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65826 + ... + 67494.

It is an arithmetic number, because the mean of its divisors is an integer number (3577140).

Almost surely, 2^111255540 is an apocalyptic number.

111255540 is a gapful number since it is divisible by the number (10) 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 111255540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171702720).

111255540 is an abundant number, since it is smaller than the sum of its proper divisors (232149900).

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

111255540 is a wasteful number, since it uses less digits than its factorization.

111255540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1793 (or 1791 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 24.

The square root of 111255540 is about 10547.7741727817. The cubic root of 111255540 is about 480.9580690825.

The spelling of 111255540 in words is "one hundred eleven million, two hundred fifty-five thousand, five hundred forty".