27074561 has 2 divisors, whose sum is σ = 27074562. Its totient is φ = 27074560.

The previous prime is 27074539. The next prime is 27074587. The reversal of 27074561 is 16547072.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25200400 + 1874161 = 5020^2 + 1369^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27074561 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 (27074521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13537280 + 13537281.

It is an arithmetic number, because the mean of its divisors is an integer number (13537281).

It is a Proth number, since it is equal to 3305 ⋅ 2¹³ + 1 and 3305 < 2¹³.

Almost surely, 2^27074561 is an apocalyptic number.

It is an amenable number.

27074561 is a deficient number, since it is larger than the sum of its proper divisors (1).

27074561 is an equidigital number, since it uses as much as digits as its factorization.

27074561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 27074561 is about 5203.3221118820. The cubic root of 27074561 is about 300.2758980416.

The spelling of 27074561 in words is "twenty-seven million, seventy-four thousand, five hundred sixty-one".