53553443 has 2 divisors, whose sum is σ = 53553444. Its totient is φ = 53553442.

The previous prime is 53553439. The next prime is 53553463. The reversal of 53553443 is 34435535.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53553443 - 2² = 53553439 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (53553413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26776721 + 26776722.

It is an arithmetic number, because the mean of its divisors is an integer number (26776722).

Almost surely, 2^53553443 is an apocalyptic number.

53553443 is a deficient number, since it is larger than the sum of its proper divisors (1).

53553443 is an equidigital number, since it uses as much as digits as its factorization.

53553443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54000, while the sum is 32.

The square root of 53553443 is about 7318.0217955401. The cubic root of 53553443 is about 376.9315286297.

Adding to 53553443 its reverse (34435535), we get a palindrome (87988978).

The spelling of 53553443 in words is "fifty-three million, five hundred fifty-three thousand, four hundred forty-three".