52530661 has 2 divisors, whose sum is σ = 52530662. Its totient is φ = 52530660.

The previous prime is 52530659. The next prime is 52530679. The reversal of 52530661 is 16603525.

52530661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26977636 + 25553025 = 5194^2 + 5055^2 .

It is a cyclic number.

It is not a de Polignac number, because 52530661 - 2¹ = 52530659 is a prime.

Together with 52530659, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52530601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26265330 + 26265331.

It is an arithmetic number, because the mean of its divisors is an integer number (26265331).

Almost surely, 2^52530661 is an apocalyptic number.

It is an amenable number.

52530661 is a deficient number, since it is larger than the sum of its proper divisors (1).

52530661 is an equidigital number, since it uses as much as digits as its factorization.

52530661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 52530661 is about 7247.8038742781. The cubic root of 52530661 is about 374.5164992437.

The spelling of 52530661 in words is "fifty-two million, five hundred thirty thousand, six hundred sixty-one".