27496561 has 2 divisors, whose sum is σ = 27496562. Its totient is φ = 27496560.

The previous prime is 27496549. The next prime is 27496577. The reversal of 27496561 is 16569472.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23619600 + 3876961 = 4860^2 + 1969^2 .

It is a cyclic number.

It is not a de Polignac number, because 27496561 - 2⁵ = 27496529 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (27496541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13748280 + 13748281.

It is an arithmetic number, because the mean of its divisors is an integer number (13748281).

Almost surely, 2^27496561 is an apocalyptic number.

It is an amenable number.

27496561 is a deficient number, since it is larger than the sum of its proper divisors (1).

27496561 is an equidigital number, since it uses as much as digits as its factorization.

27496561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 40.

The square root of 27496561 is about 5243.7163348145. The cubic root of 27496561 is about 301.8279541383.

The spelling of 27496561 in words is "twenty-seven million, four hundred ninety-six thousand, five hundred sixty-one".