551220330102 has 96 divisors (see below), whose sum is σ = 1212451373952. Its totient is φ = 166955323392.

The previous prime is 551220330097. The next prime is 551220330103. The reversal of 551220330102 is 201033022155.

It is a happy number.

551220330102 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551220330103) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 159448758 + ... + 159452214.

It is an arithmetic number, because the mean of its divisors is an integer number (12629701812).

Almost surely, 2^551220330102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551220330102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (606225686976).

551220330102 is an abundant number, since it is smaller than the sum of its proper divisors (661231043850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

551220330102 is a wasteful number, since it uses less digits than its factorization.

551220330102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5902 (or 5889 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

Adding to 551220330102 its reverse (201033022155), we get a palindrome (752253352257).

The spelling of 551220330102 in words is "five hundred fifty-one billion, two hundred twenty million, three hundred thirty thousand, one hundred two".