111556145 has 8 divisors (see below), whose sum is σ = 136715904. Its totient is φ = 87345904.

The previous prime is 111556117. The next prime is 111556153. The reversal of 111556145 is 541655111.

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 111556145 - 2¹⁶ = 111490609 is a prime.

It is a super-2 number, since 2×111556145² = 24889546974522050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 237119 + ... + 237588.

It is an arithmetic number, because the mean of its divisors is an integer number (17089488).

Almost surely, 2^111556145 is an apocalyptic number.

It is an amenable number.

111556145 is a deficient number, since it is larger than the sum of its proper divisors (25159759).

111556145 is an equidigital number, since it uses as much as digits as its factorization.

111556145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474759.

The product of its digits is 3000, while the sum is 29.

The square root of 111556145 is about 10562.0142491856. The cubic root of 111556145 is about 481.3908516710.

The spelling of 111556145 in words is "one hundred eleven million, five hundred fifty-six thousand, one hundred forty-five".