248855381 has 2 divisors, whose sum is σ = 248855382. Its totient is φ = 248855380.

The previous prime is 248855339. The next prime is 248855389. The reversal of 248855381 is 183558842.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202492900 + 46362481 = 14230^2 + 6809^2 .

It is a cyclic number.

It is not a de Polignac number, because 248855381 - 2¹⁰ = 248854357 is a prime.

It is a super-2 number, since 2×248855381² = 123858001305310322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (248855389) 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, 124427690 + 124427691.

It is an arithmetic number, because the mean of its divisors is an integer number (124427691).

Almost surely, 2^248855381 is an apocalyptic number.

It is an amenable number.

248855381 is a deficient number, since it is larger than the sum of its proper divisors (1).

248855381 is an equidigital number, since it uses as much as digits as its factorization.

248855381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 307200, while the sum is 44.

The square root of 248855381 is about 15775.1507441292. The cubic root of 248855381 is about 628.9976342100.

The spelling of 248855381 in words is "two hundred forty-eight million, eight hundred fifty-five thousand, three hundred eighty-one".