2251330243 has 2 divisors, whose sum is σ = 2251330244. Its totient is φ = 2251330242.

The previous prime is 2251330223. The next prime is 2251330259. The reversal of 2251330243 is 3420331522.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2251330243 is a prime.

It is not a weakly prime, because it can be changed into another prime (2251330223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1125665121 + 1125665122.

It is an arithmetic number, because the mean of its divisors is an integer number (1125665122).

Almost surely, 2^2251330243 is an apocalyptic number.

2251330243 is a deficient number, since it is larger than the sum of its proper divisors (1).

2251330243 is an equidigital number, since it uses as much as digits as its factorization.

2251330243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 2251330243 is about 47448.1848230256. The cubic root of 2251330243 is about 1310.6288849622.

Adding to 2251330243 its reverse (3420331522), we get a palindrome (5671661765).

The spelling of 2251330243 in words is "two billion, two hundred fifty-one million, three hundred thirty thousand, two hundred forty-three".