55306242 has 24 divisors (see below), whose sum is σ = 122093244. Its totient is φ = 18087264.

The previous prime is 55306217. The next prime is 55306243. The reversal of 55306242 is 24260355.

55306242 is a `hidden beast` number, since 5 + 5 + 30 + 624 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 54774801 + 531441 = 7401^2 + 729^2 .

It is not an unprimeable number, because it can be changed into a prime (55306243) 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 11 ways as a sum of consecutive naturals, for example, 28033 + ... + 29940.

Almost surely, 2^55306242 is an apocalyptic number.

55306242 is an abundant number, since it is smaller than the sum of its proper divisors (66787002).

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

55306242 is a wasteful number, since it uses less digits than its factorization.

55306242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58034 (or 58031 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 55306242 is about 7436.8166576836. The cubic root of 55306242 is about 380.9997726661. Note that the first 3 decimals are identical.

Adding to 55306242 its reverse (24260355), we get a palindrome (79566597).

The spelling of 55306242 in words is "fifty-five million, three hundred six thousand, two hundred forty-two".