111956017 has 2 divisors, whose sum is σ = 111956018. Its totient is φ = 111956016.

The previous prime is 111955951. The next prime is 111956023. The reversal of 111956017 is 710659111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104121616 + 7834401 = 10204^2 + 2799^2 .

It is a cyclic number.

It is not a de Polignac number, because 111956017 - 2⁷ = 111955889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111956017.

It is not a weakly prime, because it can be changed into another prime (111956027) 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 as a sum of consecutive naturals, namely, 55978008 + 55978009.

It is an arithmetic number, because the mean of its divisors is an integer number (55978009).

Almost surely, 2^111956017 is an apocalyptic number.

It is an amenable number.

111956017 is a deficient number, since it is larger than the sum of its proper divisors (1).

111956017 is an equidigital number, since it uses as much as digits as its factorization.

111956017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1890, while the sum is 31.

The square root of 111956017 is about 10580.9270387807. The cubic root of 111956017 is about 481.9653461883.

The spelling of 111956017 in words is "one hundred eleven million, nine hundred fifty-six thousand, seventeen".