27561487 has 2 divisors, whose sum is σ = 27561488. Its totient is φ = 27561486.

The previous prime is 27561481. The next prime is 27561493. The reversal of 27561487 is 78416572.

It is a balanced prime because it is at equal distance from previous prime (27561481) and next prime (27561493).

It is a cyclic number.

It is not a de Polignac number, because 27561487 - 2¹¹ = 27559439 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27561481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13780743 + 13780744.

It is an arithmetic number, because the mean of its divisors is an integer number (13780744).

Almost surely, 2^27561487 is an apocalyptic number.

27561487 is a deficient number, since it is larger than the sum of its proper divisors (1).

27561487 is an equidigital number, since it uses as much as digits as its factorization.

27561487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94080, while the sum is 40.

The square root of 27561487 is about 5249.9035229231. The cubic root of 27561487 is about 302.0653302226.

The spelling of 27561487 in words is "twenty-seven million, five hundred sixty-one thousand, four hundred eighty-seven".