27272761 has 2 divisors, whose sum is σ = 27272762. Its totient is φ = 27272760.

The previous prime is 27272747. The next prime is 27272783. The reversal of 27272761 is 16727272.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15848361 + 11424400 = 3981^2 + 3380^2 .

It is a cyclic number.

It is not a de Polignac number, because 27272761 - 2⁷ = 27272633 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 (27272701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13636380 + 13636381.

It is an arithmetic number, because the mean of its divisors is an integer number (13636381).

Almost surely, 2^27272761 is an apocalyptic number.

It is an amenable number.

27272761 is a deficient number, since it is larger than the sum of its proper divisors (1).

27272761 is an equidigital number, since it uses as much as digits as its factorization.

27272761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16464, while the sum is 34.

The square root of 27272761 is about 5222.3329078105. The cubic root of 27272761 is about 301.0068430360.

The spelling of 27272761 in words is "twenty-seven million, two hundred seventy-two thousand, seven hundred sixty-one".