55681583 has 2 divisors, whose sum is σ = 55681584. Its totient is φ = 55681582.

The previous prime is 55681531. The next prime is 55681631. The reversal of 55681583 is 38518655.

55681583 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 55681583 - 2⁶ = 55681519 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55681583.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55681513) 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, 27840791 + 27840792.

It is an arithmetic number, because the mean of its divisors is an integer number (27840792).

Almost surely, 2^55681583 is an apocalyptic number.

55681583 is a deficient number, since it is larger than the sum of its proper divisors (1).

55681583 is an equidigital number, since it uses as much as digits as its factorization.

55681583 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144000, while the sum is 41.

The square root of 55681583 is about 7462.0093138511. The cubic root of 55681583 is about 381.8597271034.

The spelling of 55681583 in words is "fifty-five million, six hundred eighty-one thousand, five hundred eighty-three".