552813537521 has 12 divisors (see below), whose sum is σ = 643366511460. Its totient is φ = 473620815360.

The previous prime is 552813537491. The next prime is 552813537541. The reversal of 552813537521 is 125735318255.

It can be written as a sum of positive squares in 2 ways, for example, as 375542224225 + 177271313296 = 612815^2 + 421036^2 .

It is not a de Polignac number, because 552813537521 - 2¹⁴ = 552813521137 is a prime.

It is a super-3 number, since 3×552813537521³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (552813537541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2504456 + ... + 2716233.

It is an arithmetic number, because the mean of its divisors is an integer number (53613875955).

Almost surely, 2^552813537521 is an apocalyptic number.

It is an amenable number.

552813537521 is a deficient number, since it is larger than the sum of its proper divisors (90552973939).

552813537521 is a wasteful number, since it uses less digits than its factorization.

552813537521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5222864 (or 5222857 counting only the distinct ones).

The product of its digits is 1260000, while the sum is 47.

The spelling of 552813537521 in words is "five hundred fifty-two billion, eight hundred thirteen million, five hundred thirty-seven thousand, five hundred twenty-one".