55580087 has 2 divisors, whose sum is σ = 55580088. Its totient is φ = 55580086.

The previous prime is 55580071. The next prime is 55580099. The reversal of 55580087 is 78008555.

55580087 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 55580087 - 2⁴ = 55580071 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55580087.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55580017) 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, 27790043 + 27790044.

It is an arithmetic number, because the mean of its divisors is an integer number (27790044).

Almost surely, 2^55580087 is an apocalyptic number.

55580087 is a deficient number, since it is larger than the sum of its proper divisors (1).

55580087 is an equidigital number, since it uses as much as digits as its factorization.

55580087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56000, while the sum is 38.

The square root of 55580087 is about 7455.2053626979. The cubic root of 55580087 is about 381.6275689076.

The spelling of 55580087 in words is "fifty-five million, five hundred eighty thousand, eighty-seven".