651288257 has 2 divisors, whose sum is σ = 651288258. Its totient is φ = 651288256.

The previous prime is 651288227. The next prime is 651288283. The reversal of 651288257 is 752882156.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 375429376 + 275858881 = 19376^2 + 16609^2 .

It is a cyclic number.

It is not a de Polignac number, because 651288257 - 2¹⁰ = 651287233 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (651288227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325644128 + 325644129.

It is an arithmetic number, because the mean of its divisors is an integer number (325644129).

Almost surely, 2^651288257 is an apocalyptic number.

It is an amenable number.

651288257 is a deficient number, since it is larger than the sum of its proper divisors (1).

651288257 is an equidigital number, since it uses as much as digits as its factorization.

651288257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 268800, while the sum is 44.

The square root of 651288257 is about 25520.3498604545. The cubic root of 651288257 is about 866.8110038860.

The spelling of 651288257 in words is "six hundred fifty-one million, two hundred eighty-eight thousand, two hundred fifty-seven".