54728143 has 4 divisors (see below), whose sum is σ = 56207320. Its totient is φ = 53248968.

The previous prime is 54728129. The next prime is 54728203. The reversal of 54728143 is 34182745.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34182745 = 5 ⋅6836549.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54728143 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 54728099 and 54728108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54728243) 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, 739533 + ... + 739606.

It is an arithmetic number, because the mean of its divisors is an integer number (14051830).

Almost surely, 2^54728143 is an apocalyptic number.

54728143 is a deficient number, since it is larger than the sum of its proper divisors (1479177).

54728143 is a wasteful number, since it uses less digits than its factorization.

54728143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1479176.

The product of its digits is 26880, while the sum is 34.

The square root of 54728143 is about 7397.8471868511. The cubic root of 54728143 is about 379.6676295031.

The spelling of 54728143 in words is "fifty-four million, seven hundred twenty-eight thousand, one hundred forty-three".