55042441 has 2 divisors, whose sum is σ = 55042442. Its totient is φ = 55042440.

The previous prime is 55042423. The next prime is 55042483. The reversal of 55042441 is 14424055.

It is a happy number.

55042441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53071225 + 1971216 = 7285^2 + 1404^2 .

It is a cyclic number.

It is not a de Polignac number, because 55042441 - 2⁹ = 55041929 is a prime.

It is a super-2 number, since 2×55042441² = 6059340622476962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55042241) 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, 27521220 + 27521221.

It is an arithmetic number, because the mean of its divisors is an integer number (27521221).

Almost surely, 2^55042441 is an apocalyptic number.

It is an amenable number.

55042441 is a deficient number, since it is larger than the sum of its proper divisors (1).

55042441 is an equidigital number, since it uses as much as digits as its factorization.

55042441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 55042441 is about 7419.0593069472. The cubic root of 55042441 is about 380.3930397779.

Adding to 55042441 its reverse (14424055), we get a palindrome (69466496).

The spelling of 55042441 in words is "fifty-five million, forty-two thousand, four hundred forty-one".