54145543 has 4 divisors (see below), whose sum is σ = 55466208. Its totient is φ = 52824880.

The previous prime is 54145537. The next prime is 54145577. The reversal of 54145543 is 34554145.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 54145543 - 2⁹ = 54145031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54145513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 660271 + ... + 660352.

It is an arithmetic number, because the mean of its divisors is an integer number (13866552).

Almost surely, 2^54145543 is an apocalyptic number.

54145543 is a deficient number, since it is larger than the sum of its proper divisors (1320665).

54145543 is a wasteful number, since it uses less digits than its factorization.

54145543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320664.

The product of its digits is 24000, while the sum is 31.

The square root of 54145543 is about 7358.3655114434. The cubic root of 54145543 is about 378.3155893964.

Adding to 54145543 its reverse (34554145), we get a palindrome (88699688).

The spelling of 54145543 in words is "fifty-four million, one hundred forty-five thousand, five hundred forty-three".