55547 has 2 divisors, whose sum is σ = 55548. Its totient is φ = 55546.

The previous prime is 55541. The next prime is 55579. The reversal of 55547 is 74555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55547 - 2⁸ = 55291 is a prime.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 55547.

It is not a weakly prime, because it can be changed into another prime (55541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27773 + 27774.

It is an arithmetic number, because the mean of its divisors is an integer number (27774).

2⁵⁵⁵⁴⁷ is an apocalyptic number.

55547 is a deficient number, since it is larger than the sum of its proper divisors (1).

55547 is an equidigital number, since it uses as much as digits as its factorization.

55547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3500, while the sum is 26.

The square root of 55547 is about 235.6841106227. The cubic root of 55547 is about 38.1551825846.

The spelling of 55547 in words is "fifty-five thousand, five hundred forty-seven".