26168221 has 2 divisors, whose sum is σ = 26168222. Its totient is φ = 26168220.

The previous prime is 26168203. The next prime is 26168239. The reversal of 26168221 is 12286162.

It is a balanced prime because it is at equal distance from previous prime (26168203) and next prime (26168239).

It can be written as a sum of positive squares in only one way, i.e., 23872996 + 2295225 = 4886^2 + 1515^2 .

It is a cyclic number.

It is not a de Polignac number, because 26168221 - 2¹⁵ = 26135453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26168221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26168521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13084110 + 13084111.

It is an arithmetic number, because the mean of its divisors is an integer number (13084111).

Almost surely, 2^26168221 is an apocalyptic number.

It is an amenable number.

26168221 is a deficient number, since it is larger than the sum of its proper divisors (1).

26168221 is an equidigital number, since it uses as much as digits as its factorization.

26168221 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 26168221 is about 5115.4883442346. The cubic root of 26168221 is about 296.8871492867.

The spelling of 26168221 in words is "twenty-six million, one hundred sixty-eight thousand, two hundred twenty-one".