111144857 has 2 divisors, whose sum is σ = 111144858. Its totient is φ = 111144856.

The previous prime is 111144833. The next prime is 111144881. The reversal of 111144857 is 758441111.

It is a balanced prime because it is at equal distance from previous prime (111144833) and next prime (111144881).

It can be written as a sum of positive squares in only one way, i.e., 102495376 + 8649481 = 10124^2 + 2941^2 .

It is a cyclic number.

It is not a de Polignac number, because 111144857 - 2²⁰ = 110096281 is a prime.

It is not a weakly prime, because it can be changed into another prime (111144157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55572428 + 55572429.

It is an arithmetic number, because the mean of its divisors is an integer number (55572429).

Almost surely, 2^111144857 is an apocalyptic number.

It is an amenable number.

111144857 is a deficient number, since it is larger than the sum of its proper divisors (1).

111144857 is an equidigital number, since it uses as much as digits as its factorization.

111144857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4480, while the sum is 32.

The square root of 111144857 is about 10542.5261204324. The cubic root of 111144857 is about 480.7985218365.

Adding to 111144857 its reverse (758441111), we get a palindrome (869585968).

The spelling of 111144857 in words is "one hundred eleven million, one hundred forty-four thousand, eight hundred fifty-seven".