53045313015521 has 8 divisors (see below), whose sum is σ = 54134334680040. Its totient is φ = 51959556784512.

The previous prime is 53045313015473. The next prime is 53045313015547. The reversal of 53045313015521 is 12551031354035.

It can be written as a sum of positive squares in 4 ways, for example, as 456927329296 + 52588385686225 = 675964^2 + 7251785^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53045313015521 - 2¹⁰ = 53045313014497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (53045313015551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 816325556 + ... + 816390533.

It is an arithmetic number, because the mean of its divisors is an integer number (6766791835005).

Almost surely, 2^{53045313015521} is an apocalyptic number.

It is an amenable number.

53045313015521 is a deficient number, since it is larger than the sum of its proper divisors (1089021664519).

53045313015521 is a wasteful number, since it uses less digits than its factorization.

53045313015521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1632716755.

The product of its (nonzero) digits is 135000, while the sum is 38.

Adding to 53045313015521 its reverse (12551031354035), we get a palindrome (65596344369556).

The spelling of 53045313015521 in words is "fifty-three trillion, forty-five billion, three hundred thirteen million, fifteen thousand, five hundred twenty-one".