111487385 has 4 divisors (see below), whose sum is σ = 133784868. Its totient is φ = 89189904.

The previous prime is 111487381. The next prime is 111487393. The reversal of 111487385 is 583784111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 583784111 = 8429 ⋅69259.

It can be written as a sum of positive squares in 2 ways, for example, as 26183689 + 85303696 = 5117^2 + 9236^2 .

It is a cyclic number.

It is not a de Polignac number, because 111487385 - 2² = 111487381 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111487381) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 11148734 + ... + 11148743.

It is an arithmetic number, because the mean of its divisors is an integer number (33446217).

Almost surely, 2^111487385 is an apocalyptic number.

It is an amenable number.

111487385 is a deficient number, since it is larger than the sum of its proper divisors (22297483).

111487385 is an equidigital number, since it uses as much as digits as its factorization.

111487385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22297482.

The product of its digits is 26880, while the sum is 38.

The square root of 111487385 is about 10558.7586865123. The cubic root of 111487385 is about 481.2919261837.

The spelling of 111487385 in words is "one hundred eleven million, four hundred eighty-seven thousand, three hundred eighty-five".