27215055 has 64 divisors (see below), whose sum is σ = 57139200. Its totient is φ = 12026880.

The previous prime is 27215053. The next prime is 27215059. The reversal of 27215055 is 55051272.

It is a happy number.

It is not a de Polignac number, because 27215055 - 2¹ = 27215053 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27215051) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 28831 + ... + 29759.

It is an arithmetic number, because the mean of its divisors is an integer number (892800).

Almost surely, 2^27215055 is an apocalyptic number.

27215055 is an abundant number, since it is smaller than the sum of its proper divisors (29924145).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27215055 is a wasteful number, since it uses less digits than its factorization.

27215055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981 (or 975 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 27.

The square root of 27215055 is about 5216.8050567373. The cubic root of 27215055 is about 300.7943946007.

It can be divided in two parts, 2721 and 5055, that added together give a 5-th power (7776 = 6⁵).

The spelling of 27215055 in words is "twenty-seven million, two hundred fifteen thousand, fifty-five".