55740243 has 16 divisors (see below), whose sum is σ = 84250880. Its totient is φ = 32495904.

The previous prime is 55740239. The next prime is 55740253. The reversal of 55740243 is 34204755.

55740243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55740243 - 2² = 55740239 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55740243.

It is not an unprimeable number, because it can be changed into a prime (55740253) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 36871 + ... + 38352.

It is an arithmetic number, because the mean of its divisors is an integer number (5265680).

Almost surely, 2^55740243 is an apocalyptic number.

55740243 is a deficient number, since it is larger than the sum of its proper divisors (28510637).

55740243 is a wasteful number, since it uses less digits than its factorization.

55740243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75258.

The product of its (nonzero) digits is 16800, while the sum is 30.

The square root of 55740243 is about 7465.9388558975. The cubic root of 55740243 is about 381.9937751971.

Adding to 55740243 its reverse (34204755), we get a palindrome (89944998).

The spelling of 55740243 in words is "fifty-five million, seven hundred forty thousand, two hundred forty-three".