27051481 has 2 divisors, whose sum is σ = 27051482. Its totient is φ = 27051480.

The previous prime is 27051467. The next prime is 27051503. The reversal of 27051481 is 18415072.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22467600 + 4583881 = 4740^2 + 2141^2 .

It is a cyclic number.

It is not a de Polignac number, because 27051481 - 2²³ = 18662873 is a prime.

It is a super-2 number, since 2×27051481² = 1463565248586722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27051281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13525740 + 13525741.

It is an arithmetic number, because the mean of its divisors is an integer number (13525741).

Almost surely, 2^27051481 is an apocalyptic number.

It is an amenable number.

27051481 is a deficient number, since it is larger than the sum of its proper divisors (1).

27051481 is an equidigital number, since it uses as much as digits as its factorization.

27051481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 27051481 is about 5201.1038251510. The cubic root of 27051481 is about 300.1905493146.

It can be divided in two parts, 2705 and 1481, that added together give a triangular number (4186 = T₉₁).

The spelling of 27051481 in words is "twenty-seven million, fifty-one thousand, four hundred eighty-one".