52530643961 has 4 divisors (see below), whose sum is σ = 52535983092. Its totient is φ = 52525304832.

The previous prime is 52530643951. The next prime is 52530643967. The reversal of 52530643961 is 16934603525.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19246290361 + 33284353600 = 138731^2 + 182440^2 .

It is a cyclic number.

It is not a de Polignac number, because 52530643961 - 2³⁴ = 35350774777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52530643967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2654780 + ... + 2674493.

It is an arithmetic number, because the mean of its divisors is an integer number (13133995773).

Almost surely, 2^52530643961 is an apocalyptic number.

It is an amenable number.

52530643961 is a deficient number, since it is larger than the sum of its proper divisors (5339131).

52530643961 is an equidigital number, since it uses as much as digits as its factorization.

52530643961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5339130.

The product of its (nonzero) digits is 583200, while the sum is 44.

The spelling of 52530643961 in words is "fifty-two billion, five hundred thirty million, six hundred forty-three thousand, nine hundred sixty-one".