12552353521 has 8 divisors (see below), whose sum is σ = 12631386600. Its totient is φ = 12473567232.

The previous prime is 12552353509. The next prime is 12552353531. The reversal of 12552353521 is 12535325521.

It can be written as a sum of positive squares in 4 ways, for example, as 5035463521 + 7516890000 = 70961^2 + 86700^2 .

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 12552353521 - 2¹⁹ = 12551829233 is a prime.

It is a super-3 number, since 3×12552353521³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12552353531) 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, 40881 + ... + 163633.

It is an arithmetic number, because the mean of its divisors is an integer number (1578923325).

Almost surely, 2^12552353521 is an apocalyptic number.

It is an amenable number.

12552353521 is a deficient number, since it is larger than the sum of its proper divisors (79033079).

12552353521 is a wasteful number, since it uses less digits than its factorization.

12552353521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123395.

The product of its digits is 45000, while the sum is 34.

The spelling of 12552353521 in words is "twelve billion, five hundred fifty-two million, three hundred fifty-three thousand, five hundred twenty-one".