53055305521 has 2 divisors, whose sum is σ = 53055305522. Its totient is φ = 53055305520.

The previous prime is 53055305503. The next prime is 53055305573. The reversal of 53055305521 is 12550355035.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50355360000 + 2699945521 = 224400^2 + 51961^2 .

It is a cyclic number.

It is not a de Polignac number, because 53055305521 - 2⁷ = 53055305393 is a prime.

It is not a weakly prime, because it can be changed into another prime (53055305621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26527652760 + 26527652761.

It is an arithmetic number, because the mean of its divisors is an integer number (26527652761).

Almost surely, 2^53055305521 is an apocalyptic number.

It is an amenable number.

53055305521 is a deficient number, since it is larger than the sum of its proper divisors (1).

53055305521 is an equidigital number, since it uses as much as digits as its factorization.

53055305521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56250, while the sum is 34.

The spelling of 53055305521 in words is "fifty-three billion, fifty-five million, three hundred five thousand, five hundred twenty-one".