27405055 has 4 divisors (see below), whose sum is σ = 32886072. Its totient is φ = 21924040.

The previous prime is 27405047. The next prime is 27405073. The reversal of 27405055 is 55050472.

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

It is not a de Polignac number, because 27405055 - 2³ = 27405047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2740501 + ... + 2740510.

It is an arithmetic number, because the mean of its divisors is an integer number (8221518).

Almost surely, 2^27405055 is an apocalyptic number.

27405055 is a deficient number, since it is larger than the sum of its proper divisors (5481017).

27405055 is an equidigital number, since it uses as much as digits as its factorization.

27405055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5481016.

The product of its (nonzero) digits is 7000, while the sum is 28.

The square root of 27405055 is about 5234.9837631076. The cubic root of 27405055 is about 301.4927635735.

The spelling of 27405055 in words is "twenty-seven million, four hundred five thousand, fifty-five".