111111853 has 2 divisors, whose sum is σ = 111111854. Its totient is φ = 111111852.

The previous prime is 111111823. The next prime is 111111941. The reversal of 111111853 is 358111111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87946884 + 23164969 = 9378^2 + 4813^2 .

It is a cyclic number.

It is not a de Polignac number, because 111111853 - 2²¹ = 109014701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111111823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55555926 + 55555927.

It is an arithmetic number, because the mean of its divisors is an integer number (55555927).

Almost surely, 2^111111853 is an apocalyptic number.

It is an amenable number.

111111853 is a deficient number, since it is larger than the sum of its proper divisors (1).

111111853 is an equidigital number, since it uses as much as digits as its factorization.

111111853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120, while the sum is 22.

The square root of 111111853 is about 10540.9607247158. The cubic root of 111111853 is about 480.7509267557.

Adding to 111111853 its reverse (358111111), we get a palindrome (469222964).

The spelling of 111111853 in words is "one hundred eleven million, one hundred eleven thousand, eight hundred fifty-three".