54503821 has 2 divisors, whose sum is σ = 54503822. Its totient is φ = 54503820.

The previous prime is 54503807. The next prime is 54503851. The reversal of 54503821 is 12830545.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43414921 + 11088900 = 6589^2 + 3330^2 .

It is a cyclic number.

It is not a de Polignac number, because 54503821 - 2¹¹ = 54501773 is a prime.

It is equal to p_3254338 and since 54503821 and 3254338 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54503821.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54503851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27251910 + 27251911.

It is an arithmetic number, because the mean of its divisors is an integer number (27251911).

Almost surely, 2^54503821 is an apocalyptic number.

It is an amenable number.

54503821 is a deficient number, since it is larger than the sum of its proper divisors (1).

54503821 is an equidigital number, since it uses as much as digits as its factorization.

54503821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 54503821 is about 7382.6703163557. The cubic root of 54503821 is about 379.1481866344.

The spelling of 54503821 in words is "fifty-four million, five hundred three thousand, eight hundred twenty-one".