111544427 has 2 divisors, whose sum is σ = 111544428. Its totient is φ = 111544426.

The previous prime is 111544423. The next prime is 111544453. The reversal of 111544427 is 724445111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111544427 - 2² = 111544423 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111544427.

It is not a weakly prime, because it can be changed into another prime (111544423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55772213 + 55772214.

It is an arithmetic number, because the mean of its divisors is an integer number (55772214).

Almost surely, 2^111544427 is an apocalyptic number.

111544427 is a deficient number, since it is larger than the sum of its proper divisors (1).

111544427 is an equidigital number, since it uses as much as digits as its factorization.

111544427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4480, while the sum is 29.

The square root of 111544427 is about 10561.4595108820. The cubic root of 111544427 is about 481.3739957774.

Adding to 111544427 its reverse (724445111), we get a palindrome (835989538).

The spelling of 111544427 in words is "one hundred eleven million, five hundred forty-four thousand, four hundred twenty-seven".