26260621 has 2 divisors, whose sum is σ = 26260622. Its totient is φ = 26260620.

The previous prime is 26260609. The next prime is 26260657. The reversal of 26260621 is 12606262.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22458121 + 3802500 = 4739^2 + 1950^2 .

It is a cyclic number.

It is not a de Polignac number, because 26260621 - 2¹⁵ = 26227853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26260021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13130310 + 13130311.

It is an arithmetic number, because the mean of its divisors is an integer number (13130311).

Almost surely, 2^26260621 is an apocalyptic number.

It is an amenable number.

26260621 is a deficient number, since it is larger than the sum of its proper divisors (1).

26260621 is an equidigital number, since it uses as much as digits as its factorization.

26260621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 26260621 is about 5124.5117816237. The cubic root of 26260621 is about 297.2361750239.

Adding to 26260621 its reverse (12606262), we get a palindrome (38866883).

The spelling of 26260621 in words is "twenty-six million, two hundred sixty thousand, six hundred twenty-one".