55042250 has 16 divisors (see below), whose sum is σ = 103039560. Its totient is φ = 22016800.

The previous prime is 55042241. The next prime is 55042271. The reversal of 55042250 is 5224055.

55042250 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 18088009 + 36954241 = 4253^2 + 6079^2 .

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 7 ways as a sum of consecutive naturals, for example, 109835 + ... + 110334.

Almost surely, 2^55042250 is an apocalyptic number.

55042250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55042250 is a deficient number, since it is larger than the sum of its proper divisors (47997310).

55042250 is a wasteful number, since it uses less digits than its factorization.

55042250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220186 (or 220176 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 55042250 is about 7419.0464346842. The cubic root of 55042250 is about 380.3925997831.

The spelling of 55042250 in words is "fifty-five million, forty-two thousand, two hundred fifty".