53545044521 has 2 divisors, whose sum is σ = 53545044522. Its totient is φ = 53545044520.

The previous prime is 53545044491. The next prime is 53545044529. The reversal of 53545044521 is 12544054535.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40511625625 + 13033418896 = 201275^2 + 114164^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53545044521 is a prime.

It is not a weakly prime, because it can be changed into another prime (53545044529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26772522260 + 26772522261.

It is an arithmetic number, because the mean of its divisors is an integer number (26772522261).

Almost surely, 2^53545044521 is an apocalyptic number.

It is an amenable number.

53545044521 is a deficient number, since it is larger than the sum of its proper divisors (1).

53545044521 is an equidigital number, since it uses as much as digits as its factorization.

53545044521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240000, while the sum is 38.

The spelling of 53545044521 in words is "fifty-three billion, five hundred forty-five million, forty-four thousand, five hundred twenty-one".