111405845 has 8 divisors (see below), whose sum is σ = 141551064. Its totient is φ = 83881984.

The previous prime is 111405829. The next prime is 111405851. The reversal of 111405845 is 548504111.

It can be written as a sum of positive squares in 4 ways, for example, as 26894596 + 84511249 = 5186^2 + 9193^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111405845 - 2⁴ = 111405829 is a prime.

It is a super-2 number, since 2×111405845² = 24822524600328050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 655244 + ... + 655413.

It is an arithmetic number, because the mean of its divisors is an integer number (17693883).

Almost surely, 2^111405845 is an apocalyptic number.

It is an amenable number.

111405845 is a deficient number, since it is larger than the sum of its proper divisors (30145219).

111405845 is a wasteful number, since it uses less digits than its factorization.

111405845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1310679.

The product of its (nonzero) digits is 3200, while the sum is 29.

The square root of 111405845 is about 10554.8967309017. The cubic root of 111405845 is about 481.1745612904.

Adding to 111405845 its reverse (548504111), we get a palindrome (659909956).

The spelling of 111405845 in words is "one hundred eleven million, four hundred five thousand, eight hundred forty-five".