111166945 has 4 divisors (see below), whose sum is σ = 133400340. Its totient is φ = 88933552.

The previous prime is 111166943. The next prime is 111166969. The reversal of 111166945 is 549661111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 66129424 + 45037521 = 8132^2 + 6711^2 .

It is a cyclic number.

It is not a de Polignac number, because 111166945 - 2¹ = 111166943 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111166945.

It is not an unprimeable number, because it can be changed into a prime (111166943) 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 3 ways as a sum of consecutive naturals, for example, 11116690 + ... + 11116699.

It is an arithmetic number, because the mean of its divisors is an integer number (33350085).

Almost surely, 2^111166945 is an apocalyptic number.

It is an amenable number.

111166945 is a deficient number, since it is larger than the sum of its proper divisors (22233395).

111166945 is an equidigital number, since it uses as much as digits as its factorization.

111166945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22233394.

The product of its digits is 6480, while the sum is 34.

The square root of 111166945 is about 10543.5736351581. The cubic root of 111166945 is about 480.8303696869.

The spelling of 111166945 in words is "one hundred eleven million, one hundred sixty-six thousand, nine hundred forty-five".