26555999 has 2 divisors, whose sum is σ = 26556000. Its totient is φ = 26555998.

The previous prime is 26555993. The next prime is 26556001. The reversal of 26555999 is 99955562.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26555999 - 2⁸ = 26555743 is a prime.

Together with 26556001, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26555993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13277999 + 13278000.

It is an arithmetic number, because the mean of its divisors is an integer number (13278000).

Almost surely, 2^26555999 is an apocalyptic number.

26555999 is a deficient number, since it is larger than the sum of its proper divisors (1).

26555999 is an equidigital number, since it uses as much as digits as its factorization.

26555999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1093500, while the sum is 50.

The square root of 26555999 is about 5153.2513037887. The cubic root of 26555999 is about 298.3464545550.

The spelling of 26555999 in words is "twenty-six million, five hundred fifty-five thousand, nine hundred ninety-nine".