2251741787 has 2 divisors, whose sum is σ = 2251741788. Its totient is φ = 2251741786.

The previous prime is 2251741781. The next prime is 2251741841. The reversal of 2251741787 is 7871471522.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2251741787 is a prime.

It is not a weakly prime, because it can be changed into another prime (2251741781) 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, 1125870893 + 1125870894.

It is an arithmetic number, because the mean of its divisors is an integer number (1125870894).

Almost surely, 2^2251741787 is an apocalyptic number.

2251741787 is a deficient number, since it is larger than the sum of its proper divisors (1).

2251741787 is an equidigital number, since it uses as much as digits as its factorization.

2251741787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 219520, while the sum is 44.

The square root of 2251741787 is about 47452.5213977087. The cubic root of 2251741787 is about 1310.7087412446.

The spelling of 2251741787 in words is "two billion, two hundred fifty-one million, seven hundred forty-one thousand, seven hundred eighty-seven".