54405243 has 16 divisors (see below), whose sum is σ = 80947200. Its totient is φ = 36114120.

The previous prime is 54405199. The next prime is 54405269. The reversal of 54405243 is 34250445.

It is not a de Polignac number, because 54405243 - 2⁹ = 54404731 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (54405283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2238 + ... + 10668.

It is an arithmetic number, because the mean of its divisors is an integer number (5059200).

Almost surely, 2^54405243 is an apocalyptic number.

54405243 is a deficient number, since it is larger than the sum of its proper divisors (26541957).

54405243 is a wasteful number, since it uses less digits than its factorization.

54405243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8679 (or 8673 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 54405243 is about 7375.9909842678. The cubic root of 54405243 is about 378.9194673445.

Adding to 54405243 its reverse (34250445), we get a palindrome (88655688).

The spelling of 54405243 in words is "fifty-four million, four hundred five thousand, two hundred forty-three".