248872321 has 2 divisors, whose sum is σ = 248872322. Its totient is φ = 248872320.

The previous prime is 248872319. The next prime is 248872331. The reversal of 248872321 is 123278842.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 174240000 + 74632321 = 13200^2 + 8639^2 .

It is a cyclic number.

It is not a de Polignac number, because 248872321 - 2¹ = 248872319 is a prime.

Together with 248872319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (248872301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124436160 + 124436161.

It is an arithmetic number, because the mean of its divisors is an integer number (124436161).

Almost surely, 2^248872321 is an apocalyptic number.

It is an amenable number.

248872321 is a deficient number, since it is larger than the sum of its proper divisors (1).

248872321 is an equidigital number, since it uses as much as digits as its factorization.

248872321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43008, while the sum is 37.

The square root of 248872321 is about 15775.6876553765. The cubic root of 248872321 is about 629.0119061915.

The spelling of 248872321 in words is "two hundred forty-eight million, eight hundred seventy-two thousand, three hundred twenty-one".