27815057 has 2 divisors, whose sum is σ = 27815058. Its totient is φ = 27815056.

The previous prime is 27815033. The next prime is 27815071. The reversal of 27815057 is 75051872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21307456 + 6507601 = 4616^2 + 2551^2 .

It is a cyclic number.

It is not a de Polignac number, because 27815057 - 2¹⁶ = 27749521 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27815017) 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, 13907528 + 13907529.

It is an arithmetic number, because the mean of its divisors is an integer number (13907529).

Almost surely, 2^27815057 is an apocalyptic number.

It is an amenable number.

27815057 is a deficient number, since it is larger than the sum of its proper divisors (1).

27815057 is an equidigital number, since it uses as much as digits as its factorization.

27815057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19600, while the sum is 35.

The square root of 27815057 is about 5273.9981987103. The cubic root of 27815057 is about 302.9888532608.

The spelling of 27815057 in words is "twenty-seven million, eight hundred fifteen thousand, fifty-seven".