2248558421 has 2 divisors, whose sum is σ = 2248558422. Its totient is φ = 2248558420.

The previous prime is 2248558379. The next prime is 2248558423. The reversal of 2248558421 is 1248558422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1178548900 + 1070009521 = 34330^2 + 32711^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2248558421 is a prime.

It is a Sophie Germain prime.

Together with 2248558423, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2248558423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1124279210 + 1124279211.

It is an arithmetic number, because the mean of its divisors is an integer number (1124279211).

Almost surely, 2^2248558421 is an apocalyptic number.

It is an amenable number.

2248558421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2248558421 is an equidigital number, since it uses as much as digits as its factorization.

2248558421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 204800, while the sum is 41.

The square root of 2248558421 is about 47418.9668908971. The cubic root of 2248558421 is about 1310.0907850375.

Subtracting from 2248558421 its reverse (1248558422), we obtain a palindrome (999999999).

The spelling of 2248558421 in words is "two billion, two hundred forty-eight million, five hundred fifty-eight thousand, four hundred twenty-one".