26550091 has 2 divisors, whose sum is σ = 26550092. Its totient is φ = 26550090.

The previous prime is 26550089. The next prime is 26550133. The reversal of 26550091 is 19005562.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26550091 - 2¹ = 26550089 is a prime.

Together with 26550089, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26550071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13275045 + 13275046.

It is an arithmetic number, because the mean of its divisors is an integer number (13275046).

Almost surely, 2^26550091 is an apocalyptic number.

26550091 is a deficient number, since it is larger than the sum of its proper divisors (1).

26550091 is an equidigital number, since it uses as much as digits as its factorization.

26550091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 26550091 is about 5152.6780415625. The cubic root of 26550091 is about 298.3243282101.

The spelling of 26550091 in words is "twenty-six million, five hundred fifty thousand, ninety-one".