27982555 has 8 divisors (see below), whose sum is σ = 33912144. Its totient is φ = 22164000.

The previous prime is 27982543. The next prime is 27982571. The reversal of 27982555 is 55528972.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27982555 - 2⁵ = 27982523 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 (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27201 + ... + 28210.

It is an arithmetic number, because the mean of its divisors is an integer number (4239018).

Almost surely, 2^27982555 is an apocalyptic number.

27982555 is a deficient number, since it is larger than the sum of its proper divisors (5929589).

27982555 is a wasteful number, since it uses less digits than its factorization.

27982555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55517.

The product of its digits is 252000, while the sum is 43.

The square root of 27982555 is about 5289.8539677386. The cubic root of 27982555 is about 303.5958206401.

The spelling of 27982555 in words is "twenty-seven million, nine hundred eighty-two thousand, five hundred fifty-five".