27752527527521 has 2 divisors, whose sum is σ = 27752527527522. Its totient is φ = 27752527527520.

The previous prime is 27752527527511. The next prime is 27752527527553. The reversal of 27752527527521 is 12572572525772.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15977088208225 + 11775439319296 = 3997135^2 + 3431536^2 .

It is a cyclic number.

It is not a de Polignac number, because 27752527527521 - 2⁴² = 23354481016417 is a prime.

It is not a weakly prime, because it can be changed into another prime (27752527527511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13876263763760 + 13876263763761.

It is an arithmetic number, because the mean of its divisors is an integer number (13876263763761).

Almost surely, 2^{27752527527521} is an apocalyptic number.

It is an amenable number.

27752527527521 is a deficient number, since it is larger than the sum of its proper divisors (1).

27752527527521 is an equidigital number, since it uses as much as digits as its factorization.

27752527527521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48020000, while the sum is 59.

The spelling of 27752527527521 in words is "twenty-seven trillion, seven hundred fifty-two billion, five hundred twenty-seven million, five hundred twenty-seven thousand, five hundred twenty-one".