26321 has 2 divisors, whose sum is σ = 26322. Its totient is φ = 26320.

The previous prime is 26317. The next prime is 26339. The reversal of 26321 is 12362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25921 + 400 = 161^2 + 20^2 .

It is a cyclic number.

It is not a de Polignac number, because 26321 - 2² = 26317 is a prime.

It is a Chen prime.

It is a nialpdrome in base 8 and base 14.

It is a junction number, because it is equal to n+sod(n) for n = 26296 and 26305.

It is not a weakly prime, because it can be changed into another prime (26371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13160 + 13161.

It is an arithmetic number, because the mean of its divisors is an integer number (13161).

2²⁶³²¹ is an apocalyptic number.

It is an amenable number.

26321 is a deficient number, since it is larger than the sum of its proper divisors (1).

26321 is an equidigital number, since it uses as much as digits as its factorization.

26321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72, while the sum is 14.

The square root of 26321 is about 162.2374802566. The cubic root of 26321 is about 29.7463804650.

Adding to 26321 its sum of digits (14), we get a triangular number (26335 = T₂₂₉).

Adding to 26321 its reverse (12362), we get a palindrome (38683).

The spelling of 26321 in words is "twenty-six thousand, three hundred twenty-one".