54543921 has 8 divisors (see below), whose sum is σ = 73721760. Its totient is φ = 35864352.

The previous prime is 54543919. The next prime is 54543941. The reversal of 54543921 is 12934545.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 54543921 - 2¹ = 54543919 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (54543901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124311 + ... + 124748.

It is an arithmetic number, because the mean of its divisors is an integer number (9215220).

Almost surely, 2^54543921 is an apocalyptic number.

It is an amenable number.

54543921 is a deficient number, since it is larger than the sum of its proper divisors (19177839).

54543921 is a wasteful number, since it uses less digits than its factorization.

54543921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249135.

The product of its digits is 21600, while the sum is 33.

The square root of 54543921 is about 7385.3856365122. The cubic root of 54543921 is about 379.2411471822.

The spelling of 54543921 in words is "fifty-four million, five hundred forty-three thousand, nine hundred twenty-one".