53922516521 has 2 divisors, whose sum is σ = 53922516522. Its totient is φ = 53922516520.

The previous prime is 53922516469. The next prime is 53922516539. The reversal of 53922516521 is 12561522935.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29442784921 + 24479731600 = 171589^2 + 156460^2 .

It is a cyclic number.

It is not a de Polignac number, because 53922516521 - 2¹⁰ = 53922515497 is a prime.

It is not a weakly prime, because it can be changed into another prime (53922516551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26961258260 + 26961258261.

It is an arithmetic number, because the mean of its divisors is an integer number (26961258261).

Almost surely, 2^53922516521 is an apocalyptic number.

It is an amenable number.

53922516521 is a deficient number, since it is larger than the sum of its proper divisors (1).

53922516521 is an equidigital number, since it uses as much as digits as its factorization.

53922516521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 162000, while the sum is 41.

The spelling of 53922516521 in words is "fifty-three billion, nine hundred twenty-two million, five hundred sixteen thousand, five hundred twenty-one".