54401921 has 16 divisors (see below), whose sum is σ = 69298560. Its totient is φ = 41575680.

The previous prime is 54401861. The next prime is 54401947. The reversal of 54401921 is 12910445.

54401921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 54401921 - 2⁶ = 54401857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54401021) 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, 9770 + ... + 14291.

It is an arithmetic number, because the mean of its divisors is an integer number (4331160).

Almost surely, 2^54401921 is an apocalyptic number.

It is an amenable number.

54401921 is a deficient number, since it is larger than the sum of its proper divisors (14896639).

54401921 is a wasteful number, since it uses less digits than its factorization.

54401921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24104.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 54401921 is about 7375.7657907501. The cubic root of 54401921 is about 378.9117548765.

The spelling of 54401921 in words is "fifty-four million, four hundred one thousand, nine hundred twenty-one".