26601331 has 2 divisors, whose sum is σ = 26601332. Its totient is φ = 26601330.

The previous prime is 26601329. The next prime is 26601343. The reversal of 26601331 is 13310662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26601331 - 2¹ = 26601329 is a prime.

It is a super-2 number, since 2×26601331² = 1415261621943122, which contains 22 as substring.

Together with 26601329, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (26601301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13300665 + 13300666.

It is an arithmetic number, because the mean of its divisors is an integer number (13300666).

Almost surely, 2^26601331 is an apocalyptic number.

26601331 is a deficient number, since it is larger than the sum of its proper divisors (1).

26601331 is an equidigital number, since it uses as much as digits as its factorization.

26601331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 26601331 is about 5157.6478165924. The cubic root of 26601331 is about 298.5161205891.

Adding to 26601331 its reverse (13310662), we get a palindrome (39911993).

The spelling of 26601331 in words is "twenty-six million, six hundred one thousand, three hundred thirty-one".