54728657 has 4 divisors (see below), whose sum is σ = 54765936. Its totient is φ = 54691380.

The previous prime is 54728647. The next prime is 54728689. The reversal of 54728657 is 75682745.

54728657 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 54728657 - 2¹⁶ = 54663121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54728617) 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, 16343 + ... + 19404.

It is an arithmetic number, because the mean of its divisors is an integer number (13691484).

Almost surely, 2^54728657 is an apocalyptic number.

It is an amenable number.

54728657 is a deficient number, since it is larger than the sum of its proper divisors (37279).

54728657 is a wasteful number, since it uses less digits than its factorization.

54728657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37278.

The product of its digits is 470400, while the sum is 44.

The square root of 54728657 is about 7397.8819266057. The cubic root of 54728657 is about 379.6688180966.

The spelling of 54728657 in words is "fifty-four million, seven hundred twenty-eight thousand, six hundred fifty-seven".