54121605 has 16 divisors (see below), whose sum is σ = 86688960. Its totient is φ = 28833408.

The previous prime is 54121601. The next prime is 54121619. The reversal of 54121605 is 50612145.

54121605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 54121605 - 2² = 54121601 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54121601) 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 15 ways as a sum of consecutive naturals, for example, 20649 + ... + 23121.

It is an arithmetic number, because the mean of its divisors is an integer number (5418060).

Almost surely, 2^54121605 is an apocalyptic number.

It is an amenable number.

54121605 is a deficient number, since it is larger than the sum of its proper divisors (32567355).

54121605 is a wasteful number, since it uses less digits than its factorization.

54121605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3940.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 54121605 is about 7356.7387475701. The cubic root of 54121605 is about 378.2598294761.

The spelling of 54121605 in words is "fifty-four million, one hundred twenty-one thousand, six hundred five".