54336821 has 16 divisors (see below), whose sum is σ = 69324288. Its totient is φ = 41353200.

The previous prime is 54336809. The next prime is 54336839. The reversal of 54336821 is 12863345.

It is not a de Polignac number, because 54336821 - 2¹⁰ = 54335797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54336871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4895 + ... + 11516.

It is an arithmetic number, because the mean of its divisors is an integer number (4332768).

Almost surely, 2^54336821 is an apocalyptic number.

It is an amenable number.

54336821 is a deficient number, since it is larger than the sum of its proper divisors (14987467).

54336821 is a wasteful number, since it uses less digits than its factorization.

54336821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16472.

The product of its digits is 17280, while the sum is 32.

The square root of 54336821 is about 7371.3513686433. The cubic root of 54336821 is about 378.7605531012.

The spelling of 54336821 in words is "fifty-four million, three hundred thirty-six thousand, eight hundred twenty-one".