26573 has 2 divisors, whose sum is σ = 26574. Its totient is φ = 26572.

The previous prime is 26561. The next prime is 26591. The reversal of 26573 is 37562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26569 + 4 = 163^2 + 2^2 .

It is a cyclic number.

It is not a de Polignac number, because 26573 - 2⁴ = 26557 is a prime.

It is a super-2 number, since 2×26573² = 1412248658, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a plaindrome in base 16.

It is a nialpdrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13286 + 13287.

It is an arithmetic number, because the mean of its divisors is an integer number (13287).

2²⁶⁵⁷³ is an apocalyptic number.

It is an amenable number.

26573 is a deficient number, since it is larger than the sum of its proper divisors (1).

26573 is an equidigital number, since it uses as much as digits as its factorization.

26573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1260, while the sum is 23.

The square root of 26573 is about 163.0122694769. The cubic root of 26573 is about 29.8410107543.

The spelling of 26573 in words is "twenty-six thousand, five hundred seventy-three".