2251815347 has 2 divisors, whose sum is σ = 2251815348. Its totient is φ = 2251815346.

The previous prime is 2251815337. The next prime is 2251815353. The reversal of 2251815347 is 7435181522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2251815347 - 2⁴ = 2251815331 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2251815347.

It is not a weakly prime, because it can be changed into another prime (2251815317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1125907673 + 1125907674.

It is an arithmetic number, because the mean of its divisors is an integer number (1125907674).

Almost surely, 2^2251815347 is an apocalyptic number.

2251815347 is a deficient number, since it is larger than the sum of its proper divisors (1).

2251815347 is an equidigital number, since it uses as much as digits as its factorization.

2251815347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 67200, while the sum is 38.

The square root of 2251815347 is about 47453.2964819095. The cubic root of 2251815347 is about 1310.7230138528.

Adding to 2251815347 its reverse (7435181522), we get a palindrome (9686996869).

The spelling of 2251815347 in words is "two billion, two hundred fifty-one million, eight hundred fifteen thousand, three hundred forty-seven".