52506353521 has 2 divisors, whose sum is σ = 52506353522. Its totient is φ = 52506353520.

The previous prime is 52506353519. The next prime is 52506353533. The reversal of 52506353521 is 12535360525.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51694388496 + 811965025 = 227364^2 + 28495^2 .

It is a cyclic number.

It is not a de Polignac number, because 52506353521 - 2¹ = 52506353519 is a prime.

Together with 52506353519, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (52506323521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26253176760 + 26253176761.

It is an arithmetic number, because the mean of its divisors is an integer number (26253176761).

Almost surely, 2^52506353521 is an apocalyptic number.

It is an amenable number.

52506353521 is a deficient number, since it is larger than the sum of its proper divisors (1).

52506353521 is an equidigital number, since it uses as much as digits as its factorization.

52506353521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 135000, while the sum is 37.

The spelling of 52506353521 in words is "fifty-two billion, five hundred six million, three hundred fifty-three thousand, five hundred twenty-one".