54778025 has 6 divisors (see below), whose sum is σ = 67924782. Its totient is φ = 43822400.

The previous prime is 54777997. The next prime is 54778033. The reversal of 54778025 is 52087745.

54778025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 3211264 + 51566761 = 1792^2 + 7181^2 .

It is a de Polignac number, because none of the positive numbers 2^k-54778025 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 54778025.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1095536 + ... + 1095585.

It is an arithmetic number, because the mean of its divisors is an integer number (11320797).

Almost surely, 2^54778025 is an apocalyptic number.

It is an amenable number.

54778025 is a deficient number, since it is larger than the sum of its proper divisors (13146757).

54778025 is a wasteful number, since it uses less digits than its factorization.

54778025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2191131 (or 2191126 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 38.

The square root of 54778025 is about 7401.2178051994. The cubic root of 54778025 is about 379.7829439082.

The spelling of 54778025 in words is "fifty-four million, seven hundred seventy-eight thousand, twenty-five".