651361 has 2 divisors, whose sum is σ = 651362. Its totient is φ = 651360.

The previous prime is 651347. The next prime is 651397. The reversal of 651361 is 163156.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 342225 + 309136 = 585^2 + 556^2 .

It is a cyclic number.

It is not a de Polignac number, because 651361 - 2¹⁵ = 618593 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (651331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325680 + 325681.

It is an arithmetic number, because the mean of its divisors is an integer number (325681).

2⁶⁵¹³⁶¹ is an apocalyptic number.

It is an amenable number.

651361 is a deficient number, since it is larger than the sum of its proper divisors (1).

651361 is an equidigital number, since it uses as much as digits as its factorization.

651361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 540, while the sum is 22.

The square root of 651361 is about 807.0693898296. The cubic root of 651361 is about 86.6843274331.

The spelling of 651361 in words is "six hundred fifty-one thousand, three hundred sixty-one".