27279481 has 2 divisors, whose sum is σ = 27279482. Its totient is φ = 27279480.

The previous prime is 27279467. The next prime is 27279493. The reversal of 27279481 is 18497272.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23040000 + 4239481 = 4800^2 + 2059^2 .

It is a cyclic number.

It is not a de Polignac number, because 27279481 - 2⁷ = 27279353 is a prime.

It is a super-2 number, since 2×27279481² = 1488340167258722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27279451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13639740 + 13639741.

It is an arithmetic number, because the mean of its divisors is an integer number (13639741).

Almost surely, 2^27279481 is an apocalyptic number.

It is an amenable number.

27279481 is a deficient number, since it is larger than the sum of its proper divisors (1).

27279481 is an equidigital number, since it uses as much as digits as its factorization.

27279481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56448, while the sum is 40.

The square root of 27279481 is about 5222.9762588011. The cubic root of 27279481 is about 301.0315636705.

The spelling of 27279481 in words is "twenty-seven million, two hundred seventy-nine thousand, four hundred eighty-one".