55248428 has 12 divisors (see below), whose sum is σ = 101773560. Its totient is φ = 26170272.

The previous prime is 55248407. The next prime is 55248439. The reversal of 55248428 is 82484255.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 55248391 and 55248400.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 363401 + ... + 363552.

It is an arithmetic number, because the mean of its divisors is an integer number (8481130).

Almost surely, 2^55248428 is an apocalyptic number.

It is an amenable number.

55248428 is a deficient number, since it is larger than the sum of its proper divisors (46525132).

55248428 is a wasteful number, since it uses less digits than its factorization.

55248428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726976 (or 726974 counting only the distinct ones).

The product of its digits is 102400, while the sum is 38.

The square root of 55248428 is about 7432.9286287439. The cubic root of 55248428 is about 380.8669678818.

The spelling of 55248428 in words is "fifty-five million, two hundred forty-eight thousand, four hundred twenty-eight".