55243530 has 24 divisors (see below), whose sum is σ = 143633412. Its totient is φ = 14731584.

The previous prime is 55243511. The next prime is 55243541. The reversal of 55243530 is 3534255.

55243530 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 2 ways, for example, as 48066489 + 7177041 = 6933^2 + 2679^2 .

It is a junction number, because it is equal to n+sod(n) for n = 55243494 and 55243503.

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 11 ways as a sum of consecutive naturals, for example, 306819 + ... + 306998.

Almost surely, 2^55243530 is an apocalyptic number.

55243530 is an abundant number, since it is smaller than the sum of its proper divisors (88389882).

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

55243530 is a wasteful number, since it uses less digits than its factorization.

55243530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613830 (or 613827 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 27.

The square root of 55243530 is about 7432.5991416193. The cubic root of 55243530 is about 380.8557124090.

Adding to 55243530 its reverse (3534255), we get a palindrome (58777785).

The spelling of 55243530 in words is "fifty-five million, two hundred forty-three thousand, five hundred thirty".