55248730 has 16 divisors (see below), whose sum is σ = 101874024. Its totient is φ = 21560320.

The previous prime is 55248709. The next prime is 55248757. The reversal of 55248730 is 3784255.

It is a happy number.

55248730 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 47844889 + 7403841 = 6917^2 + 2721^2 .

It is a super-3 number, since 3×55248730³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 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, 66967 + ... + 67786.

Almost surely, 2^55248730 is an apocalyptic number.

55248730 is a deficient number, since it is larger than the sum of its proper divisors (46625294).

55248730 is a wasteful number, since it uses less digits than its factorization.

55248730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134801.

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 55248730 is about 7432.9489437235. The cubic root of 55248730 is about 380.8676618479.

The spelling of 55248730 in words is "fifty-five million, two hundred forty-eight thousand, seven hundred thirty".