55813784 has 16 divisors (see below), whose sum is σ = 112701120. Its totient is φ = 25760160.

The previous prime is 55813783. The next prime is 55813799. The reversal of 55813784 is 48731855.

55813784 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55813783) 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 in 3 ways as a sum of consecutive naturals, for example, 268232 + ... + 268439.

It is an arithmetic number, because the mean of its divisors is an integer number (7043820).

Almost surely, 2^55813784 is an apocalyptic number.

It is an amenable number.

55813784 is an abundant number, since it is smaller than the sum of its proper divisors (56887336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55813784 is a wasteful number, since it uses less digits than its factorization.

55813784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536690 (or 536686 counting only the distinct ones).

The product of its digits is 134400, while the sum is 41.

The square root of 55813784 is about 7470.8623330911. The cubic root of 55813784 is about 382.1616961178.

The spelling of 55813784 in words is "fifty-five million, eight hundred thirteen thousand, seven hundred eighty-four".