55828380 has 48 divisors (see below), whose sum is σ = 157046400. Its totient is φ = 14818368.

The previous prime is 55828361. The next prime is 55828387. The reversal of 55828380 is 8382855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55828387) 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 in 15 ways as a sum of consecutive naturals, for example, 11571 + ... + 15669.

It is an arithmetic number, because the mean of its divisors is an integer number (3271800).

Almost surely, 2^55828380 is an apocalyptic number.

It is an amenable number.

55828380 is an abundant number, since it is smaller than the sum of its proper divisors (101218020).

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

55828380 is a wasteful number, since it uses less digits than its factorization.

55828380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4338 (or 4336 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 39.

The square root of 55828380 is about 7471.8391310306. The cubic root of 55828380 is about 382.1950065628.

The spelling of 55828380 in words is "fifty-five million, eight hundred twenty-eight thousand, three hundred eighty".