54000405 has 32 divisors (see below), whose sum is σ = 96422400. Its totient is φ = 28673856.

The previous prime is 54000383. The next prime is 54000461. The reversal of 54000405 is 50400045.

It is a happy number.

It is not a de Polignac number, because 54000405 - 2¹⁶ = 53934869 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35572 + ... + 37058.

It is an arithmetic number, because the mean of its divisors is an integer number (3013200).

Almost surely, 2^54000405 is an apocalyptic number.

It is an amenable number.

54000405 is a deficient number, since it is larger than the sum of its proper divisors (42421995).

54000405 is a wasteful number, since it uses less digits than its factorization.

54000405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1770 (or 1764 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 54000405 is about 7348.4967850575. The cubic root of 54000405 is about 377.9772599069.

It can be divided in two parts, 5400040 and 5, that added together give a palindrome (5400045).

The spelling of 54000405 in words is "fifty-four million, four hundred five", and thus it is an aban number.