550251005521 has 8 divisors (see below), whose sum is σ = 636434898624. Its totient is φ = 465961264080.

The previous prime is 550251005501. The next prime is 550251005527. The reversal of 550251005521 is 125500152055.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-550251005521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (550251005527) 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, 473537290 + ... + 473538451.

It is an arithmetic number, because the mean of its divisors is an integer number (79554362328).

Almost surely, 2^550251005521 is an apocalyptic number.

It is an amenable number.

550251005521 is a deficient number, since it is larger than the sum of its proper divisors (86183893103).

550251005521 is an equidigital number, since it uses as much as digits as its factorization.

550251005521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947075831.

The product of its (nonzero) digits is 12500, while the sum is 31.

Adding to 550251005521 its reverse (125500152055), we get a palindrome (675751157576).

The spelling of 550251005521 in words is "five hundred fifty billion, two hundred fifty-one million, five thousand, five hundred twenty-one".