55968989 has 2 divisors, whose sum is σ = 55968990. Its totient is φ = 55968988.

The previous prime is 55968967. The next prime is 55969037. The reversal of 55968989 is 98986955.

55968989 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., 55502500 + 466489 = 7450^2 + 683^2 .

It is a cyclic number.

It is not a de Polignac number, because 55968989 - 2¹² = 55964893 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55968089) 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, 27984494 + 27984495.

It is an arithmetic number, because the mean of its divisors is an integer number (27984495).

Almost surely, 2^55968989 is an apocalyptic number.

It is an amenable number.

55968989 is a deficient number, since it is larger than the sum of its proper divisors (1).

55968989 is an equidigital number, since it uses as much as digits as its factorization.

55968989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6998400, while the sum is 59.

The square root of 55968989 is about 7481.2424770221. The cubic root of 55968989 is about 382.5156021944.

The spelling of 55968989 in words is "fifty-five million, nine hundred sixty-eight thousand, nine hundred eighty-nine".