55975428 has 24 divisors (see below), whose sum is σ = 145121760. Its totient is φ = 18658440.

The previous prime is 55975421. The next prime is 55975433. The reversal of 55975428 is 82457955.

55975428 is a `hidden beast` number, since 5 + 597 + 54 + 2 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (55975421) 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 in 7 ways as a sum of consecutive naturals, for example, 259038 + ... + 259253.

It is an arithmetic number, because the mean of its divisors is an integer number (6046740).

Almost surely, 2^55975428 is an apocalyptic number.

It is an amenable number.

55975428 is an abundant number, since it is smaller than the sum of its proper divisors (89146332).

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

55975428 is a wasteful number, since it uses less digits than its factorization.

55975428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518304 (or 518296 counting only the distinct ones).

The product of its digits is 504000, while the sum is 45.

The square root of 55975428 is about 7481.6728076013. The cubic root of 55975428 is about 382.5302705763.

It can be divided in two parts, 5597 and 5428, that added together give a square (11025 = 105²).

The spelling of 55975428 in words is "fifty-five million, nine hundred seventy-five thousand, four hundred twenty-eight".