550221523533 has 24 divisors (see below), whose sum is σ = 879227234496. Its totient is φ = 328770859200.

The previous prime is 550221523531. The next prime is 550221523549. The reversal of 550221523533 is 335325122055.

550221523533 is a `hidden beast` number, since 5 + 50 + 2 + 21 + 52 + 3 + 533 = 666.

It is not a de Polignac number, because 550221523533 - 2¹ = 550221523531 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550221523531) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39132360 + ... + 39146417.

It is an arithmetic number, because the mean of its divisors is an integer number (36634468104).

Almost surely, 2^550221523533 is an apocalyptic number.

It is an amenable number.

550221523533 is a deficient number, since it is larger than the sum of its proper divisors (329005710963).

550221523533 is a wasteful number, since it uses less digits than its factorization.

550221523533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78278865 (or 78278862 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 36.

Adding to 550221523533 its reverse (335325122055), we get a palindrome (885546645588).

The spelling of 550221523533 in words is "five hundred fifty billion, two hundred twenty-one million, five hundred twenty-three thousand, five hundred thirty-three".