54646721 has 12 divisors (see below), whose sum is σ = 58439292. Its totient is φ = 51088128.

The previous prime is 54646699. The next prime is 54646723. The reversal of 54646721 is 12764645.

54646721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 31798321 + 22848400 = 5639^2 + 4780^2 .

It is not a de Polignac number, because 54646721 - 2¹⁴ = 54630337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54646723) 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 11 ways as a sum of consecutive naturals, for example, 49451 + ... + 50543.

It is an arithmetic number, because the mean of its divisors is an integer number (4869941).

Almost surely, 2^54646721 is an apocalyptic number.

It is an amenable number.

54646721 is a deficient number, since it is larger than the sum of its proper divisors (3792571).

54646721 is a wasteful number, since it uses less digits than its factorization.

54646721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300 (or 1283 counting only the distinct ones).

The product of its digits is 40320, while the sum is 35.

The square root of 54646721 is about 7392.3420510688. The cubic root of 54646721 is about 379.4792520726.

The spelling of 54646721 in words is "fifty-four million, six hundred forty-six thousand, seven hundred twenty-one".