54900050221 has 2 divisors, whose sum is σ = 54900050222. Its totient is φ = 54900050220.

The previous prime is 54900050209. The next prime is 54900050269. The reversal of 54900050221 is 12205000945.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29977113321 + 24922936900 = 173139^2 + 157870^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54900050221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54900050221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54900050021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27450025110 + 27450025111.

It is an arithmetic number, because the mean of its divisors is an integer number (27450025111).

Almost surely, 2^54900050221 is an apocalyptic number.

It is an amenable number.

54900050221 is a deficient number, since it is larger than the sum of its proper divisors (1).

54900050221 is an equidigital number, since it uses as much as digits as its factorization.

54900050221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 28.

The spelling of 54900050221 in words is "fifty-four billion, nine hundred million, fifty thousand, two hundred twenty-one".