55489073 has 2 divisors, whose sum is σ = 55489074. Its totient is φ = 55489072.

The previous prime is 55489043. The next prime is 55489079. The reversal of 55489073 is 37098455.

55489073 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31449664 + 24039409 = 5608^2 + 4903^2 .

It is a cyclic number.

It is not a de Polignac number, because 55489073 - 2⁸ = 55488817 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55489073.

It is not a weakly prime, because it can be changed into another prime (55489079) 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, 27744536 + 27744537.

It is an arithmetic number, because the mean of its divisors is an integer number (27744537).

Almost surely, 2^55489073 is an apocalyptic number.

It is an amenable number.

55489073 is a deficient number, since it is larger than the sum of its proper divisors (1).

55489073 is an equidigital number, since it uses as much as digits as its factorization.

55489073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 55489073 is about 7449.0988045535. The cubic root of 55489073 is about 381.4191463729.

The spelling of 55489073 in words is "fifty-five million, four hundred eighty-nine thousand, seventy-three".