55250305321 has 2 divisors, whose sum is σ = 55250305322. Its totient is φ = 55250305320.

The previous prime is 55250305277. The next prime is 55250305351. The reversal of 55250305321 is 12350305255.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46520019225 + 8730286096 = 215685^2 + 93436^2 .

It is a cyclic number.

It is not a de Polignac number, because 55250305321 - 2¹⁹ = 55249781033 is a prime.

It is not a weakly prime, because it can be changed into another prime (55250305351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27625152660 + 27625152661.

It is an arithmetic number, because the mean of its divisors is an integer number (27625152661).

Almost surely, 2^55250305321 is an apocalyptic number.

It is an amenable number.

55250305321 is a deficient number, since it is larger than the sum of its proper divisors (1).

55250305321 is an equidigital number, since it uses as much as digits as its factorization.

55250305321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22500, while the sum is 31.

The spelling of 55250305321 in words is "fifty-five billion, two hundred fifty million, three hundred five thousand, three hundred twenty-one".