651841241 has 2 divisors, whose sum is σ = 651841242. Its totient is φ = 651841240.

The previous prime is 651841237. The next prime is 651841259. The reversal of 651841241 is 142148156.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 647448025 + 4393216 = 25445^2 + 2096^2 .

It is a cyclic number.

It is not a de Polignac number, because 651841241 - 2² = 651841237 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 651841198 and 651841207.

It is not a weakly prime, because it can be changed into another prime (651841271) 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, 325920620 + 325920621.

It is an arithmetic number, because the mean of its divisors is an integer number (325920621).

Almost surely, 2^651841241 is an apocalyptic number.

It is an amenable number.

651841241 is a deficient number, since it is larger than the sum of its proper divisors (1).

651841241 is an equidigital number, since it uses as much as digits as its factorization.

651841241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7680, while the sum is 32.

The square root of 651841241 is about 25531.1817391988. The cubic root of 651841241 is about 867.0562598660.

Adding to 651841241 its reverse (142148156), we get a palindrome (793989397).

The spelling of 651841241 in words is "six hundred fifty-one million, eight hundred forty-one thousand, two hundred forty-one".