26286121 has 2 divisors, whose sum is σ = 26286122. Its totient is φ = 26286120.

The previous prime is 26286119. The next prime is 26286137. The reversal of 26286121 is 12168262.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25613721 + 672400 = 5061^2 + 820^2 .

It is a cyclic number.

It is not a de Polignac number, because 26286121 - 2¹ = 26286119 is a prime.

Together with 26286119, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26286121.

It is not a weakly prime, because it can be changed into another prime (26286191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13143060 + 13143061.

It is an arithmetic number, because the mean of its divisors is an integer number (13143061).

Almost surely, 2^26286121 is an apocalyptic number.

It is an amenable number.

26286121 is a deficient number, since it is larger than the sum of its proper divisors (1).

26286121 is an equidigital number, since it uses as much as digits as its factorization.

26286121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 28.

The square root of 26286121 is about 5126.9992198166. Note that the first 3 decimals coincide. The cubic root of 26286121 is about 297.3323528772.

The spelling of 26286121 in words is "twenty-six million, two hundred eighty-six thousand, one hundred twenty-one".