27132561 has 12 divisors (see below), whose sum is σ = 41497092. Its totient is φ = 17024256.

The previous prime is 27132559. The next prime is 27132563. The reversal of 27132561 is 16523172.

It is a happy number.

27132561 is a `hidden beast` number, since 2 + 71 + 32 + 561 = 666.

It is an interprime number because it is at equal distance from previous prime (27132559) and next prime (27132563).

It can be written as a sum of positive squares in 2 ways, for example, as 9492561 + 17640000 = 3081^2 + 4200^2 .

It is not a de Polignac number, because 27132561 - 2¹ = 27132559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27132563) 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, 88516 + ... + 88821.

It is an arithmetic number, because the mean of its divisors is an integer number (3458091).

Almost surely, 2^27132561 is an apocalyptic number.

It is an amenable number.

27132561 is a deficient number, since it is larger than the sum of its proper divisors (14364531).

27132561 is a wasteful number, since it uses less digits than its factorization.

27132561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177360 (or 177357 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 27132561 is about 5208.8924926514. The cubic root of 27132561 is about 300.4901653569.

The spelling of 27132561 in words is "twenty-seven million, one hundred thirty-two thousand, five hundred sixty-one".