248554986221 has 2 divisors, whose sum is σ = 248554986222. Its totient is φ = 248554986220.

The previous prime is 248554986187. The next prime is 248554986227. The reversal of 248554986221 is 122689455842.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 233989875625 + 14565110596 = 483725^2 + 120686^2 .

It is a cyclic number.

It is not a de Polignac number, because 248554986221 - 2¹⁰ = 248554985197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (248554986227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124277493110 + 124277493111.

It is an arithmetic number, because the mean of its divisors is an integer number (124277493111).

Almost surely, 2^248554986221 is an apocalyptic number.

It is an amenable number.

248554986221 is a deficient number, since it is larger than the sum of its proper divisors (1).

248554986221 is an equidigital number, since it uses as much as digits as its factorization.

248554986221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11059200, while the sum is 56.

The spelling of 248554986221 in words is "two hundred forty-eight billion, five hundred fifty-four million, nine hundred eighty-six thousand, two hundred twenty-one".