54728775 has 18 divisors (see below), whose sum is σ = 98025720. Its totient is φ = 29188560.

The previous prime is 54728761. The next prime is 54728777. The reversal of 54728775 is 57782745.

It is not a de Polignac number, because 54728775 - 2⁶ = 54728711 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 54728775.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54728777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 121395 + ... + 121844.

Almost surely, 2^54728775 is an apocalyptic number.

54728775 is a deficient number, since it is larger than the sum of its proper divisors (43296945).

54728775 is a wasteful number, since it uses less digits than its factorization.

54728775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243255 (or 243247 counting only the distinct ones).

The product of its digits is 548800, while the sum is 45.

The square root of 54728775 is about 7397.8899018572. The cubic root of 54728775 is about 379.6690909634.

The spelling of 54728775 in words is "fifty-four million, seven hundred twenty-eight thousand, seven hundred seventy-five".