26540555 has 4 divisors (see below), whose sum is σ = 31848672. Its totient is φ = 21232440.

The previous prime is 26540533. The next prime is 26540567. The reversal of 26540555 is 55504562.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 26540555 - 2⁸ = 26540299 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2654051 + ... + 2654060.

It is an arithmetic number, because the mean of its divisors is an integer number (7962168).

Almost surely, 2^26540555 is an apocalyptic number.

26540555 is a deficient number, since it is larger than the sum of its proper divisors (5308117).

26540555 is an equidigital number, since it uses as much as digits as its factorization.

26540555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5308116.

The product of its (nonzero) digits is 30000, while the sum is 32.

The square root of 26540555 is about 5151.7526144022. The cubic root of 26540555 is about 298.2886075359.

The spelling of 26540555 in words is "twenty-six million, five hundred forty thousand, five hundred fifty-five".