111444497 has 2 divisors, whose sum is σ = 111444498. Its totient is φ = 111444496.

The previous prime is 111444479. The next prime is 111444521. The reversal of 111444497 is 794444111.

Together with previous prime (111444479) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103144336 + 8300161 = 10156^2 + 2881^2 .

It is an emirp because it is prime and its reverse (794444111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111444497 - 2¹⁴ = 111428113 is a prime.

It is not a weakly prime, because it can be changed into another prime (111444397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55722248 + 55722249.

It is an arithmetic number, because the mean of its divisors is an integer number (55722249).

Almost surely, 2^111444497 is an apocalyptic number.

It is an amenable number.

111444497 is a deficient number, since it is larger than the sum of its proper divisors (1).

111444497 is an equidigital number, since it uses as much as digits as its factorization.

111444497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 35.

The square root of 111444497 is about 10556.7275706063. The cubic root of 111444497 is about 481.2302023227.

The spelling of 111444497 in words is "one hundred eleven million, four hundred forty-four thousand, four hundred ninety-seven".