54815143 has 4 divisors (see below), whose sum is σ = 54840240. Its totient is φ = 54790048.

The previous prime is 54815129. The next prime is 54815213. The reversal of 54815143 is 34151845.

54815143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 54815143 - 2⁹ = 54814631 is a prime.

It is a super-2 number, since 2×54815143² = 6009399804220898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54815443) 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 3 ways as a sum of consecutive naturals, for example, 8923 + ... + 13756.

It is an arithmetic number, because the mean of its divisors is an integer number (13710060).

Almost surely, 2^54815143 is an apocalyptic number.

54815143 is a deficient number, since it is larger than the sum of its proper divisors (25097).

54815143 is a wasteful number, since it uses less digits than its factorization.

54815143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25096.

The product of its digits is 9600, while the sum is 31.

The square root of 54815143 is about 7403.7249408659. The cubic root of 54815143 is about 379.8687057958.

Adding to 54815143 its reverse (34151845), we get a palindrome (88966988).

The spelling of 54815143 in words is "fifty-four million, eight hundred fifteen thousand, one hundred forty-three".