54323821 has 2 divisors, whose sum is σ = 54323822. Its totient is φ = 54323820.

The previous prime is 54323813. The next prime is 54323827. The reversal of 54323821 is 12832345.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33062500 + 21261321 = 5750^2 + 4611^2 .

It is a cyclic number.

It is not a de Polignac number, because 54323821 - 2³ = 54323813 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54323821.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54323827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27161910 + 27161911.

It is an arithmetic number, because the mean of its divisors is an integer number (27161911).

Almost surely, 2^54323821 is an apocalyptic number.

It is an amenable number.

54323821 is a deficient number, since it is larger than the sum of its proper divisors (1).

54323821 is an equidigital number, since it uses as much as digits as its factorization.

54323821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 28.

The square root of 54323821 is about 7370.4695237142. The cubic root of 54323821 is about 378.7303447341.

The spelling of 54323821 in words is "fifty-four million, three hundred twenty-three thousand, eight hundred twenty-one".