55655687 has 2 divisors, whose sum is σ = 55655688. Its totient is φ = 55655686.

The previous prime is 55655647. The next prime is 55655701. The reversal of 55655687 is 78655655.

55655687 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 55655687 - 2⁶ = 55655623 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 (55655647) 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, 27827843 + 27827844.

It is an arithmetic number, because the mean of its divisors is an integer number (27827844).

Almost surely, 2^55655687 is an apocalyptic number.

55655687 is a deficient number, since it is larger than the sum of its proper divisors (1).

55655687 is an equidigital number, since it uses as much as digits as its factorization.

55655687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1260000, while the sum is 47.

The square root of 55655687 is about 7460.2739225849. The cubic root of 55655687 is about 381.8005203763.

The spelling of 55655687 in words is "fifty-five million, six hundred fifty-five thousand, six hundred eighty-seven".