26232221 has 2 divisors, whose sum is σ = 26232222. Its totient is φ = 26232220.

The previous prime is 26232209. The next prime is 26232277. The reversal of 26232221 is 12223262.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25140196 + 1092025 = 5014^2 + 1045^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26232221 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 26232193 and 26232202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26232281) 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, 13116110 + 13116111.

It is an arithmetic number, because the mean of its divisors is an integer number (13116111).

Almost surely, 2^26232221 is an apocalyptic number.

It is an amenable number.

26232221 is a deficient number, since it is larger than the sum of its proper divisors (1).

26232221 is an equidigital number, since it uses as much as digits as its factorization.

26232221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 20.

The square root of 26232221 is about 5121.7400363548. The cubic root of 26232221 is about 297.1289859838.

Adding to 26232221 its reverse (12223262), we get a palindrome (38455483).

The spelling of 26232221 in words is "twenty-six million, two hundred thirty-two thousand, two hundred twenty-one".