111475993 has 2 divisors, whose sum is σ = 111475994. Its totient is φ = 111475992.

The previous prime is 111475981. The next prime is 111475997. The reversal of 111475993 is 399574111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99141849 + 12334144 = 9957^2 + 3512^2 .

It is an emirp because it is prime and its reverse (399574111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111475993 - 2⁵ = 111475961 is a prime.

It is not a weakly prime, because it can be changed into another prime (111475997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55737996 + 55737997.

It is an arithmetic number, because the mean of its divisors is an integer number (55737997).

Almost surely, 2^111475993 is an apocalyptic number.

It is an amenable number.

111475993 is a deficient number, since it is larger than the sum of its proper divisors (1).

111475993 is an equidigital number, since it uses as much as digits as its factorization.

111475993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34020, while the sum is 40.

The square root of 111475993 is about 10558.2192153791. The cubic root of 111475993 is about 481.2755325072.

The spelling of 111475993 in words is "one hundred eleven million, four hundred seventy-five thousand, nine hundred ninety-three".