52513350521 has 2 divisors, whose sum is σ = 52513350522. Its totient is φ = 52513350520.

The previous prime is 52513350509. The next prime is 52513350529. The reversal of 52513350521 is 12505331525.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52475355625 + 37994896 = 229075^2 + 6164^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52513350521 is a prime.

It is not a weakly prime, because it can be changed into another prime (52513350529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26256675260 + 26256675261.

It is an arithmetic number, because the mean of its divisors is an integer number (26256675261).

Almost surely, 2^52513350521 is an apocalyptic number.

It is an amenable number.

52513350521 is a deficient number, since it is larger than the sum of its proper divisors (1).

52513350521 is an equidigital number, since it uses as much as digits as its factorization.

52513350521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22500, while the sum is 32.

The spelling of 52513350521 in words is "fifty-two billion, five hundred thirteen million, three hundred fifty thousand, five hundred twenty-one".