55378422 has 24 divisors (see below), whose sum is σ = 130894920. Its totient is φ = 16781280.

The previous prime is 55378409. The next prime is 55378439. The reversal of 55378422 is 22487355.

55378422 is a `hidden beast` number, since 553 + 7 + 84 + 22 = 666.

55378422 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 an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 139647 + ... + 140042.

It is an arithmetic number, because the mean of its divisors is an integer number (5453955).

Almost surely, 2^55378422 is an apocalyptic number.

55378422 is an abundant number, since it is smaller than the sum of its proper divisors (75516498).

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

55378422 is a wasteful number, since it uses less digits than its factorization.

55378422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279708 (or 279705 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 55378422 is about 7441.6679581932. The cubic root of 55378422 is about 381.1654478089.

The spelling of 55378422 in words is "fifty-five million, three hundred seventy-eight thousand, four hundred twenty-two".