248995321 has 2 divisors, whose sum is σ = 248995322. Its totient is φ = 248995320.

The previous prime is 248995303. The next prime is 248995391. The reversal of 248995321 is 123599842.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 245235600 + 3759721 = 15660^2 + 1939^2 .

It is a cyclic number.

It is not a de Polignac number, because 248995321 - 2¹¹ = 248993273 is a prime.

It is not a weakly prime, because it can be changed into another prime (248995301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124497660 + 124497661.

It is an arithmetic number, because the mean of its divisors is an integer number (124497661).

Almost surely, 2^248995321 is an apocalyptic number.

It is an amenable number.

248995321 is a deficient number, since it is larger than the sum of its proper divisors (1).

248995321 is an equidigital number, since it uses as much as digits as its factorization.

248995321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 43.

The square root of 248995321 is about 15779.5855775746. The cubic root of 248995321 is about 629.1155145019.

The spelling of 248995321 in words is "two hundred forty-eight million, nine hundred ninety-five thousand, three hundred twenty-one".