54966821 has 8 divisors (see below), whose sum is σ = 67651584. Its totient is φ = 43490160.

The previous prime is 54966817. The next prime is 54966839. The reversal of 54966821 is 12866945.

It is a happy number.

54966821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 54966821 - 2² = 54966817 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54966871) 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 7 ways as a sum of consecutive naturals, for example, 301925 + ... + 302106.

It is an arithmetic number, because the mean of its divisors is an integer number (8456448).

Almost surely, 2^54966821 is an apocalyptic number.

It is an amenable number.

54966821 is a deficient number, since it is larger than the sum of its proper divisors (12684763).

54966821 is a wasteful number, since it uses less digits than its factorization.

54966821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604051.

The product of its digits is 103680, while the sum is 41.

The square root of 54966821 is about 7413.9612219110. The cubic root of 54966821 is about 380.2187590818.

The spelling of 54966821 in words is "fifty-four million, nine hundred sixty-six thousand, eight hundred twenty-one".