550033501021 has 8 divisors (see below), whose sum is σ = 569014990200. Its totient is φ = 531052999680.

The previous prime is 550033501019. The next prime is 550033501037. The reversal of 550033501021 is 120105330055.

It can be written as a sum of positive squares in 4 ways, for example, as 169979745796 + 380053755225 = 412286^2 + 616485^2 .

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 550033501021 - 2¹ = 550033501019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550033508021) 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, 991141 + ... + 1443061.

It is an arithmetic number, because the mean of its divisors is an integer number (71126873775).

Almost surely, 2^550033501021 is an apocalyptic number.

It is an amenable number.

550033501021 is a deficient number, since it is larger than the sum of its proper divisors (18981489179).

550033501021 is a wasteful number, since it uses less digits than its factorization.

550033501021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493919.

The product of its (nonzero) digits is 2250, while the sum is 25.

Adding to 550033501021 its reverse (120105330055), we get a palindrome (670138831076).

The spelling of 550033501021 in words is "five hundred fifty billion, thirty-three million, five hundred one thousand, twenty-one".