111445069 has 2 divisors, whose sum is σ = 111445070. Its totient is φ = 111445068.

The previous prime is 111445049. The next prime is 111445129. The reversal of 111445069 is 960544111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110565225 + 879844 = 10515^2 + 938^2 .

It is an emirp because it is prime and its reverse (960544111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111445069 is a prime.

It is a super-2 number, since 2×111445069² = 24840006808829522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111445069.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111445039) 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, 55722534 + 55722535.

It is an arithmetic number, because the mean of its divisors is an integer number (55722535).

Almost surely, 2^111445069 is an apocalyptic number.

It is an amenable number.

111445069 is a deficient number, since it is larger than the sum of its proper divisors (1).

111445069 is an equidigital number, since it uses as much as digits as its factorization.

111445069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 111445069 is about 10556.7546623003. The cubic root of 111445069 is about 481.2310256420.

The spelling of 111445069 in words is "one hundred eleven million, four hundred forty-five thousand, sixty-nine".