54389778 has 32 divisors (see below), whose sum is σ = 112205184. Its totient is φ = 17563392.

The previous prime is 54389773. The next prime is 54389789. The reversal of 54389778 is 87798345.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 54389778.

It is not an unprimeable number, because it can be changed into a prime (54389771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74451 + ... + 75177.

It is an arithmetic number, because the mean of its divisors is an integer number (3506412).

Almost surely, 2^54389778 is an apocalyptic number.

54389778 is an abundant number, since it is smaller than the sum of its proper divisors (57815406).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54389778 is a wasteful number, since it uses less digits than its factorization.

54389778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1106.

The product of its digits is 1693440, while the sum is 51.

The square root of 54389778 is about 7374.9425760476. The cubic root of 54389778 is about 378.8835606036.

The spelling of 54389778 in words is "fifty-four million, three hundred eighty-nine thousand, seven hundred seventy-eight".