111451441 has 2 divisors, whose sum is σ = 111451442. Its totient is φ = 111451440.

The previous prime is 111451433. The next prime is 111451447. The reversal of 111451441 is 144154111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106523041 + 4928400 = 10321^2 + 2220^2 .

It is a cyclic number.

It is not a de Polignac number, because 111451441 - 2³ = 111451433 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (111451447) 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, 55725720 + 55725721.

It is an arithmetic number, because the mean of its divisors is an integer number (55725721).

Almost surely, 2^111451441 is an apocalyptic number.

It is an amenable number.

111451441 is a deficient number, since it is larger than the sum of its proper divisors (1).

111451441 is an equidigital number, since it uses as much as digits as its factorization.

111451441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 320, while the sum is 22.

The square root of 111451441 is about 10557.0564552815. The cubic root of 111451441 is about 481.2401971130.

The spelling of 111451441 in words is "one hundred eleven million, four hundred fifty-one thousand, four hundred forty-one".