111145645 has 8 divisors (see below), whose sum is σ = 143634456. Its totient is φ = 82076736.

The previous prime is 111145597. The next prime is 111145663. The reversal of 111145645 is 546541111.

It can be written as a sum of positive squares in 4 ways, for example, as 11881 + 111133764 = 109^2 + 10542^2 .

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 111145645 - 2¹⁵ = 111112877 is a prime.

It is a super-3 number, since 3×111145645³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian 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, 854902 + ... + 855031.

It is an arithmetic number, because the mean of its divisors is an integer number (17954307).

Almost surely, 2^111145645 is an apocalyptic number.

It is an amenable number.

111145645 is a deficient number, since it is larger than the sum of its proper divisors (32488811).

111145645 is a wasteful number, since it uses less digits than its factorization.

111145645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1709951.

The product of its digits is 2400, while the sum is 28.

The square root of 111145645 is about 10542.5634928133. The cubic root of 111145645 is about 480.7996580964.

Adding to 111145645 its reverse (546541111), we get a palindrome (657686756).

The spelling of 111145645 in words is "one hundred eleven million, one hundred forty-five thousand, six hundred forty-five".