55889539 has 2 divisors, whose sum is σ = 55889540. Its totient is φ = 55889538.

The previous prime is 55889513. The next prime is 55889543. The reversal of 55889539 is 93598855.

55889539 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 is a cyclic number.

It is not a de Polignac number, because 55889539 - 2⁷ = 55889411 is a prime.

It is not a weakly prime, because it can be changed into another prime (55889549) 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, 27944769 + 27944770.

It is an arithmetic number, because the mean of its divisors is an integer number (27944770).

Almost surely, 2^55889539 is an apocalyptic number.

55889539 is a deficient number, since it is larger than the sum of its proper divisors (1).

55889539 is an equidigital number, since it uses as much as digits as its factorization.

55889539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944000, while the sum is 52.

The square root of 55889539 is about 7475.9306444081. The cubic root of 55889539 is about 382.3345182477.

The spelling of 55889539 in words is "fifty-five million, eight hundred eighty-nine thousand, five hundred thirty-nine".