111617047 has 4 divisors (see below), whose sum is σ = 114339456. Its totient is φ = 108894640.

The previous prime is 111617017. The next prime is 111617069. The reversal of 111617047 is 740716111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 740716111 = 457 ⋅1620823.

It is a cyclic number.

It is not a de Polignac number, because 111617047 - 2⁷ = 111616919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111617017) 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, 1361143 + ... + 1361224.

It is an arithmetic number, because the mean of its divisors is an integer number (28584864).

Almost surely, 2^111617047 is an apocalyptic number.

111617047 is a deficient number, since it is larger than the sum of its proper divisors (2722409).

111617047 is an equidigital number, since it uses as much as digits as its factorization.

111617047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2722408.

The product of its (nonzero) digits is 1176, while the sum is 28.

The square root of 111617047 is about 10564.8969233022. The cubic root of 111617047 is about 481.4784378580.

The spelling of 111617047 in words is "one hundred eleven million, six hundred seventeen thousand, forty-seven".