650061257 has 2 divisors, whose sum is σ = 650061258. Its totient is φ = 650061256.

The previous prime is 650061253. The next prime is 650061329. The reversal of 650061257 is 752160056.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 471063616 + 178997641 = 21704^2 + 13379^2 .

It is a cyclic number.

It is not a de Polignac number, because 650061257 - 2² = 650061253 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (650061253) 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, 325030628 + 325030629.

It is an arithmetic number, because the mean of its divisors is an integer number (325030629).

Almost surely, 2^650061257 is an apocalyptic number.

It is an amenable number.

650061257 is a deficient number, since it is larger than the sum of its proper divisors (1).

650061257 is an equidigital number, since it uses as much as digits as its factorization.

650061257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 650061257 is about 25496.2988882700. The cubic root of 650061257 is about 866.2663163881.

The spelling of 650061257 in words is "six hundred fifty million, sixty-one thousand, two hundred fifty-seven".