53690579521 has 2 divisors, whose sum is σ = 53690579522. Its totient is φ = 53690579520.

The previous prime is 53690579479. The next prime is 53690579533. The reversal of 53690579521 is 12597509635.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53655236496 + 35343025 = 231636^2 + 5945^2 .

It is a cyclic number.

It is not a de Polignac number, because 53690579521 - 2⁹ = 53690579009 is a prime.

It is not a weakly prime, because it can be changed into another prime (53690579581) 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, 26845289760 + 26845289761.

It is an arithmetic number, because the mean of its divisors is an integer number (26845289761).

Almost surely, 2^53690579521 is an apocalyptic number.

It is an amenable number.

53690579521 is a deficient number, since it is larger than the sum of its proper divisors (1).

53690579521 is an equidigital number, since it uses as much as digits as its factorization.

53690579521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2551500, while the sum is 52.

The spelling of 53690579521 in words is "fifty-three billion, six hundred ninety million, five hundred seventy-nine thousand, five hundred twenty-one".