27148221 has 12 divisors (see below), whose sum is σ = 39687648. Its totient is φ = 17880264.

The previous prime is 27148213. The next prime is 27148223. The reversal of 27148221 is 12284172.

It is not a de Polignac number, because 27148221 - 2³ = 27148213 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27148223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17425 + ... + 18918.

It is an arithmetic number, because the mean of its divisors is an integer number (3307304).

Almost surely, 2^27148221 is an apocalyptic number.

It is an amenable number.

27148221 is a deficient number, since it is larger than the sum of its proper divisors (12539427).

27148221 is a wasteful number, since it uses less digits than its factorization.

27148221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36432 (or 36429 counting only the distinct ones).

The product of its digits is 1792, while the sum is 27.

The square root of 27148221 is about 5210.3954744338. The cubic root of 27148221 is about 300.5479651712.

The spelling of 27148221 in words is "twenty-seven million, one hundred forty-eight thousand, two hundred twenty-one".