26353421 has 2 divisors, whose sum is σ = 26353422. Its totient is φ = 26353420.

The previous prime is 26353387. The next prime is 26353429. The reversal of 26353421 is 12435362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15888196 + 10465225 = 3986^2 + 3235^2 .

It is a cyclic number.

It is not a de Polignac number, because 26353421 - 2⁶ = 26353357 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26353429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13176710 + 13176711.

It is an arithmetic number, because the mean of its divisors is an integer number (13176711).

Almost surely, 2^26353421 is an apocalyptic number.

It is an amenable number.

26353421 is a deficient number, since it is larger than the sum of its proper divisors (1).

26353421 is an equidigital number, since it uses as much as digits as its factorization.

26353421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 26.

The square root of 26353421 is about 5133.5583175805. The cubic root of 26353421 is about 297.5858886257.

Adding to 26353421 its reverse (12435362), we get a palindrome (38788783).

The spelling of 26353421 in words is "twenty-six million, three hundred fifty-three thousand, four hundred twenty-one".