55549843 has 2 divisors, whose sum is σ = 55549844. Its totient is φ = 55549842.

The previous prime is 55549841. The next prime is 55549873. The reversal of 55549843 is 34894555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55549843 - 2¹ = 55549841 is a prime.

Together with 55549841, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 55549843.

It is not a weakly prime, because it can be changed into another prime (55549841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27774921 + 27774922.

It is an arithmetic number, because the mean of its divisors is an integer number (27774922).

Almost surely, 2^55549843 is an apocalyptic number.

55549843 is a deficient number, since it is larger than the sum of its proper divisors (1).

55549843 is an equidigital number, since it uses as much as digits as its factorization.

55549843 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432000, while the sum is 43.

The square root of 55549843 is about 7453.1767052714. The cubic root of 55549843 is about 381.5583352487.

The spelling of 55549843 in words is "fifty-five million, five hundred forty-nine thousand, eight hundred forty-three".