52281814561 has 2 divisors, whose sum is σ = 52281814562. Its totient is φ = 52281814560.

The previous prime is 52281814553. The next prime is 52281814573. The reversal of 52281814561 is 16541818225.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34367598225 + 17914216336 = 185385^2 + 133844^2 .

It is a cyclic number.

It is not a de Polignac number, because 52281814561 - 2³ = 52281814553 is a prime.

It is not a weakly prime, because it can be changed into another prime (52281814661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26140907280 + 26140907281.

It is an arithmetic number, because the mean of its divisors is an integer number (26140907281).

Almost surely, 2^52281814561 is an apocalyptic number.

It is an amenable number.

52281814561 is a deficient number, since it is larger than the sum of its proper divisors (1).

52281814561 is an equidigital number, since it uses as much as digits as its factorization.

52281814561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 153600, while the sum is 43.

The spelling of 52281814561 in words is "fifty-two billion, two hundred eighty-one million, eight hundred fourteen thousand, five hundred sixty-one".