55371889 has 2 divisors, whose sum is σ = 55371890. Its totient is φ = 55371888.

The previous prime is 55371857. The next prime is 55371923. The reversal of 55371889 is 98817355.

55371889 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., 55011889 + 360000 = 7417^2 + 600^2 .

It is a cyclic number.

It is not a de Polignac number, because 55371889 - 2⁵ = 55371857 is a prime.

It is not a weakly prime, because it can be changed into another prime (55371809) 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, 27685944 + 27685945.

It is an arithmetic number, because the mean of its divisors is an integer number (27685945).

Almost surely, 2^55371889 is an apocalyptic number.

It is an amenable number.

55371889 is a deficient number, since it is larger than the sum of its proper divisors (1).

55371889 is an equidigital number, since it uses as much as digits as its factorization.

55371889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 302400, while the sum is 46.

The square root of 55371889 is about 7441.2289979546. The cubic root of 55371889 is about 381.1504585061.

The spelling of 55371889 in words is "fifty-five million, three hundred seventy-one thousand, eight hundred eighty-nine".