52573445521 has 9 divisors (see below), whose sum is σ = 54041472849. Its totient is φ = 51144287184.

The previous prime is 52573445443. The next prime is 52573445527. The reversal of 52573445521 is 12554437525.

The square root of 52573445521 is 229289.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 6090085521 + 46483360000 = 78039^2 + 215600^2 .

It is not a de Polignac number, because 52573445521 - 2¹⁵ = 52573412753 is a prime.

It is a super-2 number, since 2×52573445521² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52573445527) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8480595 + ... + 8486791.

Almost surely, 2^52573445521 is an apocalyptic number.

52573445521 is the 229289-th square number.

52573445521 is the 114645-th centered octagonal number.

It is an amenable number.

52573445521 is a deficient number, since it is larger than the sum of its proper divisors (1468027328).

52573445521 is an frugal number, since it uses more digits than its factorization.

52573445521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12468 (or 6234 counting only the distinct ones).

The product of its digits is 840000, while the sum is 43.

The spelling of 52573445521 in words is "fifty-two billion, five hundred seventy-three million, four hundred forty-five thousand, five hundred twenty-one".