26226521 has 2 divisors, whose sum is σ = 26226522. Its totient is φ = 26226520.

The previous prime is 26226493. The next prime is 26226553. The reversal of 26226521 is 12562262.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18800896 + 7425625 = 4336^2 + 2725^2 .

It is a cyclic number.

It is not a de Polignac number, because 26226521 - 2⁶ = 26226457 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (26226721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13113260 + 13113261.

It is an arithmetic number, because the mean of its divisors is an integer number (13113261).

Almost surely, 2^26226521 is an apocalyptic number.

It is an amenable number.

26226521 is a deficient number, since it is larger than the sum of its proper divisors (1).

26226521 is an equidigital number, since it uses as much as digits as its factorization.

26226521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 26.

The square root of 26226521 is about 5121.1835546092. The cubic root of 26226521 is about 297.1074633698.

Adding to 26226521 its reverse (12562262), we get a palindrome (38788783).

The spelling of 26226521 in words is "twenty-six million, two hundred twenty-six thousand, five hundred twenty-one".