2251116247 has 2 divisors, whose sum is σ = 2251116248. Its totient is φ = 2251116246.

The previous prime is 2251116239. The next prime is 2251116269. The reversal of 2251116247 is 7426111522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2251116247 - 2³ = 2251116239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2251116347) 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, 1125558123 + 1125558124.

It is an arithmetic number, because the mean of its divisors is an integer number (1125558124).

Almost surely, 2^2251116247 is an apocalyptic number.

2251116247 is a deficient number, since it is larger than the sum of its proper divisors (1).

2251116247 is an equidigital number, since it uses as much as digits as its factorization.

2251116247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 31.

The square root of 2251116247 is about 47445.9297200508. The cubic root of 2251116247 is about 1310.5873571845.

Adding to 2251116247 its reverse (7426111522), we get a palindrome (9677227769).

The spelling of 2251116247 in words is "two billion, two hundred fifty-one million, one hundred sixteen thousand, two hundred forty-seven".