111441553 has 2 divisors, whose sum is σ = 111441554. Its totient is φ = 111441552.

The previous prime is 111441493. The next prime is 111441557. The reversal of 111441553 is 355144111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102272769 + 9168784 = 10113^2 + 3028^2 .

It is a cyclic number.

It is not a de Polignac number, because 111441553 - 2¹⁷ = 111310481 is a prime.

It is not a weakly prime, because it can be changed into another prime (111441557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55720776 + 55720777.

It is an arithmetic number, because the mean of its divisors is an integer number (55720777).

Almost surely, 2^111441553 is an apocalyptic number.

It is an amenable number.

111441553 is a deficient number, since it is larger than the sum of its proper divisors (1).

111441553 is an equidigital number, since it uses as much as digits as its factorization.

111441553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1200, while the sum is 25.

The square root of 111441553 is about 10556.5881325360. The cubic root of 111441553 is about 481.2259647748.

Adding to 111441553 its reverse (355144111), we get a palindrome (466585664).

The spelling of 111441553 in words is "one hundred eleven million, four hundred forty-one thousand, five hundred fifty-three".