55355563 has 2 divisors, whose sum is σ = 55355564. Its totient is φ = 55355562.

The previous prime is 55355561. The next prime is 55355579. The reversal of 55355563 is 36555355.

55355563 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 is a cyclic number.

It is not a de Polignac number, because 55355563 - 2¹ = 55355561 is a prime.

Together with 55355561, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (55355561) 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, 27677781 + 27677782.

It is an arithmetic number, because the mean of its divisors is an integer number (27677782).

Almost surely, 2^55355563 is an apocalyptic number.

55355563 is a deficient number, since it is larger than the sum of its proper divisors (1).

55355563 is an equidigital number, since it uses as much as digits as its factorization.

55355563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 168750, while the sum is 37.

The square root of 55355563 is about 7440.1319208734. The cubic root of 55355563 is about 381.1129950076.

The spelling of 55355563 in words is "fifty-five million, three hundred fifty-five thousand, five hundred sixty-three".