652321 has 2 divisors, whose sum is σ = 652322. Its totient is φ = 652320.

The previous prime is 652319. The next prime is 652331. The reversal of 652321 is 123256.

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., 640000 + 12321 = 800^2 + 111^2 .

It is a cyclic number.

It is not a de Polignac number, because 652321 - 2¹ = 652319 is a prime.

Together with 652319, it forms a pair of twin primes.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (652331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326160 + 326161.

It is an arithmetic number, because the mean of its divisors is an integer number (326161).

2⁶⁵²³²¹ is an apocalyptic number.

It is an amenable number.

652321 is a deficient number, since it is larger than the sum of its proper divisors (1).

652321 is an equidigital number, since it uses as much as digits as its factorization.

652321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 360, while the sum is 19.

The square root of 652321 is about 807.6639152519. The cubic root of 652321 is about 86.7268927208.

Adding to 652321 its reverse (123256), we get a palindrome (775577).

The spelling of 652321 in words is "six hundred fifty-two thousand, three hundred twenty-one".